Reseller · White-label · B2B

Resell PowerMTA infrastructure. Not SaaS sub-accounts.

Build an SMTP business under your own brand on top of dedicated PowerMTA tenants, dedicated IPs per client and 35–55% wholesale margins. Your panel, your pricing, your customer relationship — our infrastructure does the work in the background.

Dedicated IPs per client
PowerMTA per tenant
35–55% margin floor
Full white-label
WHMCS/Stripe hooks

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The thesis

Most "SMTP reseller" programmes are SaaS reseller programmes wearing a hat.

Walk through the typical SMTP reseller offer in 2026 and you find the same pattern: you sign up, you get a panel, you provision sub-accounts on a shared sending pool, and you mark up the price. Your client never has dedicated IPs. Your client never has independent reputation. Your client never has a PowerMTA they can tune. What your client has is a logo on top of someone else's SaaS — and what you have is a margin that disappears the moment a competitor decides to cut twenty percent.

We sell something different. When you bring a client into our reseller programme, that client gets a dedicated PowerMTA tenant, dedicated IPs assigned to them alone, isolation at the VMTA layer, and a sending posture that scales from a thousand emails a day to ten million without changing platforms. You sell that. We provide the substrate. The margin floor is 35% on the entry tier and 55% on the White-Label, and the ceiling is wherever you can take it because we do not police your retail pricing.

The economics work because dedicated infrastructure carries a price tag that shared SaaS cannot match — and your reseller margin is a percentage of that bigger number.

Dedicated PowerMTA per client

Each client tenant runs on isolated VMTAs. No shared pools, no cross-contamination between resellers, no neighbour effect dragging down sender reputation.

Dedicated IPs per client

Real dedicated IPv4 per client, not pool slices. PTR records, blacklist hygiene, warmup curves — all per client. Your client owns their reputation; you control the experience.

True white-label

Your panel domain, your logo, your support email, your invoices. The only mention of Blue Spirit appears in regulatory disclosures (DPAs, AUPs) where naming the underlying provider is legally required.

Provisioning API

REST endpoints for tenant create, IP assign, suspend, report. We integrate with WHMCS, FastSpring, Stripe Connect, ChartMogul or whatever you run. 4–8 hours of joint engineering work, included on Agency and above.

Margin floors, not ceilings

35% off list on Entry, 45% on Agency, 55% on White-Label. We do not dictate your retail price. Most agencies run 60–80% effective margin once warmup, dedicated IPs and managed services are bundled on top.

Engineer-to-engineer support

Slack/Telegram channel with a reseller success engineer who knows your account. No tier-1 ticket queue. No script-reading. No CSAT-inflating SDR theatre.

Margin economics

What 35–55% off list actually means in dollars.

The margin percentage is meaningless without the price tag it applies to. The chart below contrasts the wholesale cost we charge you per client per month against the retail price agencies in our programme typically charge end clients. The gap is your gross margin, before you add value-services like warmup, deliverability monitoring or migration consulting that often double the effective per-client revenue.

Wholesale cost vs. typical retail per client

EUR per client per month, based on our Growth-equivalent reference plan.

Wholesale and retail pricing comparison by reseller tier
Categoría	Your wholesale cost (EUR/client/mo)	Typical retail price (EUR/client/mo)
Reseller Entry	97	149
Reseller Agency	82	199
Reseller White-Label	67	299

Reference: based on our Growth PowerMTA plan (€ 149 list). Wholesale pricing is the discounted rate you pay us; retail price is the median observed in active reseller deployments as of Q1 2026. Your retail price is yours to set; the data here reflects what the market accepts on dedicated infrastructure for mid-volume senders.

Reseller maths

Revenue scales linearly with client count. Costs do not.

The economics of an Agency-tier reseller portfolio are simple to model. Below is the curve assuming the typical Agency-tier retail of € 199 per client per month with a 45% wholesale discount — what most of our active resellers charge for a Growth-equivalent dedicated PowerMTA. Your time investment per client after the first three or four is essentially flat: provisioning is automated, support is funnelled, billing is integrated into your stack. Twenty-five clients is where most Agency-tier resellers cross break-even on the programme cost itself; fifty clients is where it becomes a meaningful business line.

Reseller monthly revenue and gross margin

Agency tier · 45% wholesale discount · € 199 retail.

Revenue and margin scaling by client portfolio size
Categoría	Monthly recurring revenue (EUR)	Your gross margin after wholesale (EUR)
5 clients	995	448
10 clients	1990	895
25 clients	4975	2238
50 clients	9950	4477
100 clients	19900	8955

Model: Agency tier wholesale cost € 109/client/mo (45% off Growth list), retail € 199/client/mo. Excludes value-services revenue (warmup, audits, migration) which most Agency partners layer on top to push effective margin above 60%.

Programme comparison

What your client gets — and therefore what you can sell.

The chart below compares the three dominant SMTP reseller models in 2026 across seven dimensions that affect your ability to win, retain and price clients. Shared-SMTP reseller programmes (think SMTPmart-style) are easy to start but expose every client to the same pool reputation; OEM SaaS reseller programmes (Mailjet-style) give you a polished SaaS to brand but never let you escape the shared substrate; infrastructure reseller — what we offer — gives every client real isolation and gives you a product worth premium pricing.

Reseller models — capability coverage

Higher is better, on a 0–5 scale across seven buyer-relevant dimensions.

Capability coverage by reseller model
Categoría	Shared SMTP reseller (SMTPmart-style)	OEM SaaS reseller (Mailjet-style)	Blue Spirit infrastructure reseller
Dedicated IP per client	1	2	5
PowerMTA control	1	2	5
IP isolation	1	3	5
Margin floor	3	3	5
White-label depth	4	3	5
Provisioning API	3	5	5
Support model flex	2	3	5

Scoring rubric: 5 = best-in-class, 1 = absent. Shared SMTP scores reflect the typical SMTPmart/idealsmtp configuration. OEM SaaS scores reflect Mailjet OEM and equivalent programmes. Blue Spirit scores reflect the Reseller Agency tier baseline.

Who this programme is for

Email marketing agencies running 5–50 active client campaigns who are tired of explaining to clients why their SendGrid sub-account is throttled, or why a noisy neighbour on a Mailgun shared pool is hurting placement. You want to sell "your client's own infrastructure" — and now you can.

Cold outreach consultancies and growth firms managing dozens of client sending stacks across Instantly, Smartlead, Apollo, Lemlist. Your clients are paying multiple SaaS subscriptions for tooling on top of shared sending substrate. Replacing the substrate with dedicated infrastructure under your brand collapses the stack into one billable line, and the price difference is your margin.

MSPs and IT consultants who already manage hosting and security for SMB clients and want to add transactional email and bulk email as a high-margin add-on. The Reseller Entry tier exists for this scenario — five clients, twenty IPs, branded panel, low setup cost, prove the motion before scaling.

Affiliate networks and lead-gen operators running multi-brand sender stacks where each brand needs an isolated reputation and a clean abuse footprint. Branding the panel with the operating company that owns each vertical adds an additional layer of operational separation.

Software companies embedding SMTP as a feature in a vertical SaaS — for instance, a CRM, helpdesk or e-commerce platform that wants to offer "branded transactional email" without standing up an internal email engineering team. The OEM-style use case sits on Agency or White-Label depending on volume.

What you actually do, hour by hour, week one

Day one: you sign the reseller MSA, we provision your white-label panel on the subdomain you specify, your engineer-to-engineer Slack channel goes live, and you receive credentials for the provisioning API and the wholesale price book. The setup work on our side takes about four hours; you can typically begin onboarding clients within 48 hours of signature.

Week one: you provision your first client tenant via the panel or the API. We coordinate the IP allocation, set the rDNS, configure SPF/DKIM/DMARC and walk your engineer through the warmup plan if the client wants pre-warmed delivery. You set the retail price, send the invoice, and your client logs into a panel that has your logo on it.

Week two: you bring on your second and third client. The provisioning is now muscle memory. You start identifying which managed-services upsells (warmup, deliverability audit, migration from SendGrid) make sense to bundle. The reseller engineer on Slack helps you with the technical scoping for those upsells; you handle the commercial pitch.

Month two onwards: it is a recurring revenue line. Your churn is your churn; your acquisition is your acquisition. We are the silent infrastructure your clients never see.

Three real reseller motions that work in 2026

The migration play

Your client is on SendGrid, Mailgun or Amazon SES. They are hitting limits, throttles or unexplained reputation drops. You pitch them dedicated infrastructure under your brand, including a migration audit (we provide the audit; you brand it), a warmup plan and a parallel-running phase where the new IPs warm up while the old setup keeps shipping. Six to twelve weeks later the migration is complete, your client has dedicated IPs and a stable reputation, and your monthly recurring is locked in. The migration play has the highest close rate because it solves a present, painful problem.

The cold-outreach upgrade

Your client runs Instantly, Smartlead or Apollo with mailbox rotation across Google Workspace and Microsoft 365 accounts. Their open rates plateau because the underlying mailbox quality is variable and the warmup tools they use are simulated. You pitch a hybrid: keep the cold-email tooling for sequencing, but route sends through dedicated PowerMTA infrastructure with managed warmup. Result: better deliverability, lower per-mailbox cost at volume, and your margin sits on the infrastructure layer where it is hardest to compete on.

The vertical-SaaS embed

Your client is a SaaS that needs to send transactional and lifecycle email on behalf of their own end-customers. They started on Postmark or SES and as they scaled they realised they wanted to offer "branded transactional email" as a feature. You sit between them and us, providing the integration layer, the branded experience and the local language support — we provide the underlying PowerMTA tenants and IP management. Volume here can be substantial; the White-Label tier exists precisely for this use case.

What we will not let you do

Reseller relationships work because both sides protect the joint reputation of the network. A few rules apply equally to every tier:

No knowingly malicious customers. If a client is running phishing, scam-affiliate or CSAM-adjacent content, the answer is no. Not because we are squeamish, but because that traffic poisons the IP space we share with you and the rest of the reseller network. Our AUP is the same one that applies to direct customers; you enforce it within your own client base, we enforce it on the substrate.

No race-to-the-bottom resale. If you set retail prices below our wholesale rate, you are using the programme to subsidise something else and that creates contractual problems for us with our other resellers. Pricing has to make economic sense at the unit level.

No customer poaching from us in either direction. Direct customers we land do not get redirected to your programme; clients you land cannot be solicited by us off-channel. The customer relationship belongs to whoever brought it.

How we are different from Polarismail, SMTPmart, Mailjet OEM and Vendasta

Polarismail and similar (Skynethosting, Atmail) are focused on inbox hosting and webmail — not on bulk and transactional sending. Their reseller value is in MX, IMAP and webmail experience for end-user accounts. Useful, but a different category from what you would resell with us.

SMTPmart and idealsmtp are SMTP relay resellers built on shared sending pools. The barrier to entry is low, the margins are real but compressed, and the product you can pitch upmarket is limited because the substrate is shared. Good for volume B2B SaaS plays where the end client does not care about the underlying infrastructure; weak for any client conversation where dedicated reputation matters.

Mailjet's OEM programme is a polished example of SaaS-as-OEM: API, iframes, sub-accounts, volume discount, your brand on top. The technical product is excellent, the margin economics are reasonable, but you never escape the SaaS substrate — your clients are tenants in their pool, not owners of dedicated infrastructure. If your buyer profile is "I want an email feature in my SaaS and I do not care how the sausage is made", Mailjet OEM is a fine fit. If your buyer profile is "I want to sell email infrastructure as a premium product to clients who care", you need an infrastructure reseller, not a SaaS reseller.

Vendasta is a meta-marketplace of white-label tools — not a focused email play. They include email products in their catalogue but the depth and the support for high-volume sending are limited. Vendasta wins when your value proposition is "I am an agency selling 30 different services from one panel"; they lose when your value proposition is "I am an email expert and I sell email well".

The short version

If you want to operate a margin-respectable email infrastructure business under your own brand without standing up datacenters, hiring an MTA engineer or pricing yourself into a corner, this is the programme. The reseller engineer who would be assigned to your account is on Slack right now; the application form is a conversation, not a credit-card form.

2026 reality

Three forces reshaped the SMTP reseller economics between 2024 and 2026.

If your last evaluation of reseller economics was 2023, three concrete shifts changed the math meaningfully. The pressures pushing agencies and MSPs toward owned-margin email infrastructure have hardened, and the supply-side economics of running a focused reseller programme have improved.

First, the agency software stack consolidation hit a margin floor. Agencies running on HubSpot Solutions Partner ($400/mo membership), HighLevel SaaSpreneur ($497/mo floor), or Vendasta marketplaces watched their effective margin compress over 2024-2025 as upstream platforms added features and raised wholesale prices. The structural problem: in commission-based reseller programmes you do not own the customer relationship — when contracts lapse, the upstream platform keeps the customer. The agencies that survived this consolidation were the ones who shifted product margin from SaaS commissions to infrastructure they controlled. Email infrastructure resale is one of the few categories where genuine product margin (not commission) is still achievable in 2026 because the underlying complexity (MTA operation, IP reputation management, deliverability) is hard enough that operators value the abstraction layer the reseller provides.

Second, shared-IP deliverability incidents at scale-SaaS reseller platforms became operationally undeniable. HighLevel's LC Email shared-IP infrastructure (Mailgun-backed) accumulated a documented track record of SpamCop listings affecting customer-side deliverability through 2024-2025. SendGrid's free tier discontinuation in May 2025 pushed thousands of small senders into shared-IP paid tiers where bad-actor neighbours degrade everyone's reputation. The market response: agencies increasingly insist on dedicated-IP options when they resell email, and infrastructure resellers (us, dedicated-IP-focused providers) gained share at the expense of shared-pool SaaS resellers. The "dedicated IP" question moved from optional upsell to default expectation in mid-market reseller pitches.

Third, the bring-your-own-MTA model became a credible alternative to fully-managed reseller paths. KumoMTA's open-source release (with founder DNA from PowerMTA) plus mature managed-infrastructure providers means agencies have a third option beyond "shared SaaS" and "build it yourself": partner with an infrastructure provider who operates your MTA and IPs while you keep the customer relationship and the margin. This is the model our reseller programme implements. The economics work because we monetize on infrastructure (servers + IPs + operations) while you monetize on customer relationships, branding and value-added services. Neither side competes with the other; both sides keep more margin than commission models allow.

The takeaway: in 2026 the reseller question is less "which SaaS commission programme should I join?" and more "do I want commission economics or product margin economics?". Agencies and MSPs serious about email infrastructure as a service line should pick the latter. The contract structure, the customer-ownership rights, and the margin floors all materially differ.

Decision framework

Four-question decision tree — which reseller model fits your agency?

The tree below is the conversation we have with every agency, MSP and consultancy applying to our reseller programme. Four binary questions, four terminal recommendations including a "stay where you are" branch when the migration would be premature for your scale.

Two sub-points worth noting. First: the "stay on SaaS commission" branch is the right answer for genuinely small operations. If you have 3 clients and one of them needs occasional email, the operational overhead of running an infrastructure reseller programme exceeds the margin captured. Wait until you have 10+ clients with consistent email needs before transitioning. Second: the question "product margin or commission" is the structural decision that determines whether your email-services business compounds or stays linear. Commission economics cap at the percentage your upstream pays you; product margin economics scale with the value you deliver to your clients. Agencies that build email-services into a revenue line worth defending choose product margin almost universally.

Architecture comparison — three reseller models side-by-side.

The diagram below shows the structural differences between three production reseller models: (1) commission-based SaaS reseller (HubSpot, Vendasta), (2) shared-pool SaaS reseller (Mailjet OEM, SendGrid Reseller), and (3) infrastructure reseller with dedicated tenants (this programme). The differences are not just architectural — they shape what you can sell, what margin you keep, and who owns the customer relationship.

Three observations from the architecture comparison. First: the customer-ownership question dominates long-term agency economics. In Path 1, when your contract lapses with HubSpot or Vendasta, the upstream platform keeps your customer relationship; you walked the customer to the door of someone else's house. Path 2 keeps the billing relationship with you but shares reputation risk across all tenants in the pool. Path 3 keeps the customer relationship and isolates reputation per-tenant. Second: shared-pool reputation risk is structural, not contractual — no SLA from a shared-pool provider can fully insulate you from a neighbour tenant being a bad actor. The only structural fix is dedicated IPs, which means infrastructure reseller economics. Third: the margin difference compounds. A $30/customer/month margin difference times 50 customers times 36 months equals $54K in delta over a typical 3-year client cohort. Agencies underestimate this because they evaluate reseller programmes on monthly numbers; the right framing is 36-month cumulative margin per cohort.

Deep capability matrix — 16 dimensions across reseller programmes.

Most reseller programme comparisons either marketing-grade ("white-label!") or feature-checklist ("does it have sub-accounts?"). Below is the 16-feature matrix Blue Spirit uses during reseller programme onboarding, comparing this programme against the four most common alternative reseller paths: HubSpot Solutions Partner (commission), Vendasta marketplace (commission), Mailjet OEM (shared-pool SaaS), and SendGrid Reseller (shared-pool SaaS).

Capability	This programme	HubSpot	Vendasta	Mailjet OEM	SendGrid Reseller
Customer ownership	✓ full	✗ upstream owns	✗ marketplace	⚠ billing only	⚠ billing only
Margin model	✓ product 35-55%	✗ commission ~10-20%	⚠ marketplace ~20-30%	✓ product ~25-35%	⚠ product ~15-25%
Dedicated IPs per client	✓ first-class	✗ N/A (not email)	✗ via 3rd party	⚠ premium tier	⚠ premium tier
Shared-pool reputation risk	✓ none (dedicated)	✗ N/A	✗ varies by vendor	✗ shared default	✗ shared default
White-label UI / branding	✓ full	✗ HubSpot brand	⚠ marketplace tag	✓ iframe + API	✓ subuser model
Bring-your-own-MTA	✓ PMTA/Kumo tenants	✗ N/A	✗ marketplace only	✗ Mailjet substrate	✗ SendGrid substrate
High-volume bulk + transactional	✓ first-class	✗ marketing only	⚠ varies by vendor	✓ both	✓ both
High-risk vertical clients	⚠ case-by-case	✗ AUP forbids	✗ marketplace policies	✗ AUP forbids	✗ AUP forbids
Setup fee / membership	✓ none	✗ $400/mo	✗ marketplace fee	✓ contract only	✓ contract only
Volume floor (min commitment)	✓ Bronze tier from 1 client	⚠ tiered partner status	✓ low	⚠ contract minimum	⚠ contract minimum
Technical support during onboarding	✓ dedicated engineer	⚠ self-service docs	⚠ marketplace support	✓ CSM assigned	⚠ tier-dependent
Provisioning automation	✓ API + WHMCS	⚠ HubSpot CRM API	⚠ marketplace API	✓ subaccount API	✓ subuser API
Branded billing (your invoices)	✓ your branding	✗ HubSpot bills	⚠ co-branded	✓ your branding	✓ your branding
Per-tenant deliverability ops	✓ provider handles	✗ N/A	✗ vendor-dependent	⚠ tenant self-serve	⚠ tenant self-serve
Direct-customer non-compete	✓ no poaching contract	✗ HubSpot can sell direct	✗ marketplace open	⚠ standard SaaS terms	⚠ standard SaaS terms
Contract exit / data portability	✓ tenant export	✗ HubSpot keeps customers	⚠ marketplace lock	⚠ standard SaaS	⚠ standard SaaS

The matrix exposes the structural division: HubSpot and Vendasta are commission programmes that look like reseller programmes (no customer ownership, no product margin, contract lapse = lost customer). Mailjet OEM and SendGrid Reseller are shared-pool SaaS reseller programmes (compressed margin, shared reputation risk, dedicated IPs only at premium tiers). Infrastructure reseller programmes (this one) trade higher technical-coordination overhead for full customer ownership, dedicated reputation, and product margin that compounds. Agencies serious about email infrastructure as a long-term service line typically end up in the third category once they understand the structural differences.

Margin economics — what 50 clients across 3 years actually generates

The table below normalizes 36-month cumulative margin across the same 50-client cohort served via four reseller models. Numbers assume each client at $97/month retail, average 250K emails/month per client, full term completion. Real-world cohorts have churn that further widens the gap because customer-ownership models retain renewing clients while commission models lose them at contract endpoints.

Reseller model	Margin %	Per client/mo	Year 1 (50)	Year 3 cumulative
Infrastructure reseller (this programme)	45-55%	$44-53	$26K-32K	$78K-95K
Mailjet OEM (shared-pool)	25-35%	$24-34	$14K-20K	$43K-61K
SendGrid Reseller	15-25%	$15-24	$9K-14K	$26K-43K
Vendasta marketplace	20-30%	$19-29	$11K-17K	$35K-52K (lock-in risk)
HubSpot Solutions Partner	10-20% commission	$10-19	$6K-11K minus $4.8K membership	$3K-19K minus $14.4K membership

The numbers tell a clear story. Infrastructure reseller margin compounds to roughly 2-3× the SaaS reseller alternatives over a 3-year cohort. The HubSpot Solutions Partner programme is structurally negative for small agencies once the $400/mo membership fee is netted against typical commission revenue. Vendasta marketplaces look comparable on raw percentage but have customer-lock-in risk that makes the 3-year revenue uncertain. Shared-pool SaaS resellers (Mailjet, SendGrid) are functional businesses but the margin floor is permanently capped by the upstream platform's pricing model. Only the infrastructure reseller path sustains margin growth as you grow because you control the substrate where most of the value is created.

Five mistakes operators make when launching reseller email services

About a third of Blue Spirit's reseller applications are agencies who tried a different reseller model first and want to migrate. The five mistakes below recur often enough to be predictable:

1. Underpricing the retail offer to win first clients fast

Agencies launching their reseller email services frequently compress the retail price to "win" first 5-10 clients quickly. The result: 12 months later they have a roster of price-sensitive clients who churn at the first opportunity, no margin to invest in account management, and a market position that prevents them from charging premium rates to the next cohort. The fix: price at the 75th percentile of mid-market alternatives from day one. The clients who say yes at that price are the clients who keep paying for 3+ years.

2. Choosing the wrong reseller model for your agency's actual capabilities

A 2-person agency does not have the technical bandwidth to coordinate dedicated IP setups across 30 clients without burning out. A 15-person agency with full-time DevOps capacity is wasting 30% margin if they choose a shared-pool reseller programme. The fix: honestly assess your team's technical capability before choosing a model. White-label fully-managed is the right answer for small teams; full infrastructure reseller is the right answer for teams with technical bandwidth. Mismatching is the most common path to either burnout or compressed margin.

3. Selling email services without a defined service package

Agencies that scope email work ad hoc — figuring out deliverables per client based on individual requests — end up underpricing, overdelivering, and burning margin within 6 months. The fix: define 2-3 standard packages before outreach begins. Each package should specify monthly send volume cap, included deliverability monitoring, included reporting cadence, and a clear add-on price for additional services. Productized service packages convert at higher rates than custom-scoped engagements while protecting margin.

4. Neglecting suppression list and bounce management discipline at the agency level

Resellers inherit the deliverability consequences of every tenant's email hygiene. One client with a dirty list can degrade IP reputation for the entire agency cohort if pool isolation is not strict. The fix: implement agency-level suppression list management, bounce threshold enforcement (auto-pause campaigns over 4% bounce rate), and complaint rate monitoring (auto-pause over 0.3%). The infrastructure reseller programme handles substrate-level enforcement, but agencies still need tenant-level discipline to maintain healthy reputation across the cohort.

5. Skipping the contract terms that protect customer ownership

Agencies switching from commission models to infrastructure reseller programmes frequently sign contracts without reading the customer-ownership and non-compete clauses. The result: they discover 18 months later that the upstream provider has a clause permitting direct outreach to clients above a certain volume threshold. The fix: read the contract specifically for customer-ownership rights, non-compete clauses, and data portability terms before signing. Reseller programmes that take customer ownership seriously have explicit no-poaching clauses; programmes that do not are commission programmes wearing reseller hats.

Tier mechanics — what each level actually changes operationally

The pricing tiers below differ in margin floor, but they also differ in operational reality. Understanding which tier fits requires knowing what changes between levels beyond the headline percentage.

Bronze tier — agency starting reseller services

Bronze fits the agency adding email as a third or fourth service line. Typical profile: 5-15 clients in your existing book of business, of whom 3-5 currently send substantial email. You want to capture that revenue rather than referring it to SendGrid. The margin floor is the lowest of the three tiers because your committed volume is lowest, but the customer-ownership rights and the dedicated-IP infrastructure are identical to higher tiers. We assign a reseller engineer for onboarding, walk through DNS setup and DKIM key generation for your first three clients, and let you grow into Silver as your client base expands. Most Bronze tier resellers graduate to Silver within 12-18 months as they validate the service line and add 10-15 more clients.

Silver tier — agency operating reseller services as a real revenue line

Silver fits the agency where email reseller services have become a defined revenue line — typically 15-40 clients with email needs, monthly email volume aggregating 5-15M emails across the cohort. The margin floor improves because volume commitment improves, and the operational support shifts from onboarding-focused to growth-focused. We assign a dedicated CSM rather than a rotating reseller engineer. Quarterly business reviews replace ad hoc check-ins. The wholesale rate adjusts to reflect committed volume. Silver tier is where most agencies stay long-term because the economics work, the relationship is mature, and the infrastructure handles the scale comfortably.

Gold tier — agency where email is a primary revenue line

Gold fits the agency where email-services revenue exceeds $50K/month and email is a primary product, not a third service. Typical profile: 40-100+ clients, monthly email volume 25-100M, dedicated email-operations staff on the agency side. The margin floor reaches its maximum because the volume commitment justifies the wholesale concession. The operational relationship becomes effectively a partnership: joint pipeline reviews, custom integration work, contractual SLAs that match what enterprise customers expect. Gold tier is rarer but the resellers who reach it typically stay 5+ years because the switching cost is structural — you have built your agency identity around email infrastructure expertise, and that identity does not transfer to a different reseller programme.

White-Label tier — vertical SaaS embedding email infrastructure

The White-Label tier is structurally different from the agency tiers. It fits SaaS companies that want to embed branded email-sending capability into their own product — typical profile: a vertical SaaS (real estate platform, healthcare scheduling tool, e-commerce platform) where their end-customers need to send transactional and marketing email under the SaaS's brand. White-Label tier provides API access for tenant provisioning, dedicated IP allocation per end-tenant, and integration support for embedding the sending infrastructure as a feature of the SaaS. The economics are different from agency tiers: revenue is volume-based (per-email pricing) rather than per-seat, the SaaS owns the customer relationship completely, and the integration work is more substantial upfront but operates with minimal ongoing coordination. White-Label tier is the right fit for vertical SaaS companies; it would be operational overkill for an agency reselling email to existing clients.

Five things to look for in any reseller programme — checklist for evaluating alternatives

Whether you ultimately choose this programme or another, the same five questions distinguish reseller programmes that protect agency margin from those that compress it:

1. Who owns the customer relationship after contract termination?

Read the contract specifically for what happens when you stop being a reseller. Programmes that allow you to take your customers with you (data export, no-poaching clauses, customer-ownership transfer rights) are fundamentally different from programmes that retain customer relationships when contracts lapse. The single most predictive question for whether a programme will compound your agency's value or extract value from you over time.

2. Are dedicated IPs available, and at what tier?

Shared-pool reputation risk is real, structural, and not contractually fixable. If a reseller programme only offers shared IPs, or only offers dedicated IPs at a high-volume premium tier, you cannot safely sell to clients in regulated industries, high-risk verticals, or any customer who will hold you accountable for deliverability. Programmes that offer dedicated IPs from the entry tier are structurally different from programmes that gate dedicated IPs behind enterprise pricing.

3. What is the actual margin floor, not the marketing claim?

Marketing pages frequently claim "up to 60% margin" or "100% of profit". Read the wholesale price table and calculate the actual margin at realistic retail rates. The programmes that deliver real margin floor publish wholesale rates transparently; programmes that gate wholesale rates behind sales conversations are typically less competitive than they advertise.

4. What does the technical onboarding actually look like — DIY documentation or assigned engineer?

"We'll get you set up" can mean anything from "here's a 47-page PDF" to "your reseller engineer will pair with you for two days". The first 30 days are where most reseller programmes either retain or lose new partners; programmes with assigned engineering support during onboarding retain partners at meaningfully higher rates than self-service programmes.

5. Is there a non-compete clause protecting you from upstream-direct sales?

Programmes that allow the upstream platform to sell directly to your customers above a certain volume threshold are structurally extracting value from your agency. The right contract structure has explicit non-compete language: customers you bring in cannot be solicited by the upstream platform, and the upstream platform's direct sales team is contractually prevented from poaching above any threshold. Programmes without this clause may work fine for years and then become a problem at the worst moment — when one of your largest clients hits the volume threshold the upstream cares about.

Reseller tiers

Three tiers. Margin floors that scale with commitment. No surprises in the contract.

Reseller Entry

From

€ 449 /month

Setup: € 99

Resell up to 5 dedicated PowerMTA tenants under your brand
20 wholesale dedicated IPv4 reserved for your client pool
Per-client VMTA isolation — no IP cross-contamination between resellers
Wholesale pricing: 35% off list — your margin floor is 35%
White-label control panel — your domain, your logo
Pre-warmed IP delivery on request (your client gets a stable IP from day one)
Slack/Telegram channel with reseller success engineer
Quarterly billing

Request a quote

Most chosen

Reseller Agency

From

€ 1190 /month

Setup: Free

Resell up to 25 dedicated PowerMTA tenants under your brand
80 wholesale dedicated IPv4 reserved for your client pool
Wholesale pricing: 45% off list — margin floor 45%
Full white-label: branded panel, branded support email, branded invoices on request
WHMCS / FastSpring / Stripe Connect provisioning hooks
Co-engineered onboarding: we run a 1-hour kickoff per new client you bring
4-hour SLA on critical incidents
Quarterly billing or 2-month deposit on monthly

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B2B partner

Reseller White-Label

From

€ 2790 /month

Setup: Free

Unlimited dedicated PowerMTA tenants under your brand
Reserved /23 of dedicated IPv4 (512 addresses) — full pool ownership
Wholesale pricing: 55% off list — margin floor 55%
Branded support: tickets, calls and Slack route through your team first
Custom MSA — joint NDAs, IP transfer rights, exit clauses
Co-marketing budget on case studies and joint webinars
Direct line to engineering — bypass tier-1 entirely
Annual contract with quarterly milestones

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SMTP Reseller Program — frequently asked questions

What exactly am I reselling — software, capacity, or infrastructure?

Infrastructure. Every client you bring gets a dedicated PowerMTA tenant on isolated VMTAs with their own dedicated IPs — not a shared pool, not a software licence, not a SaaS sub-account. This matters because it changes what you can sell and at what price. Resellers of shared SMTP can compete only on price; resellers of dedicated infrastructure can pitch enterprise-grade isolation, control over warmup, control over reputation. The conversation with your client moves up-market.

How are margins structured?

You buy at wholesale (35%, 45% or 55% off list depending on tier) and you set your retail price. We do not dictate, suggest or police your client pricing — that is your business. The margins listed are floors, not ceilings; agencies routinely run 60–80% margins on warmup and managed-service add-ons sold on top of the infrastructure layer.

Is this truly white-label or is your brand visible somewhere?

On Reseller Agency and Reseller White-Label tiers it is fully white-label: panel domain is yours, logo and colours are yours, support email replies come from your domain, invoices carry your brand. The only exception is regulatory disclosures (data processor identity in DPAs and the like) where the underlying provider must be named for legal compliance — we draft those clauses for you. On Reseller Entry the panel is co-branded with subtle Blue Spirit attribution; full white-label is a paid add-on at that tier.

Who handles support — me or you?

You decide. Three patterns work in practice. Pattern A: you front all client support and only escalate infrastructure-level tickets to us; we have a private engineer-to-engineer channel for that. Pattern B (white-label): your client opens a ticket on your panel, your team triages, and tickets that need engineering get re-routed to us behind the scenes; the reply still goes out under your brand. Pattern C: we provide first-line support directly to your end client under your brand using a shared ticket inbox you control. Most Agency tier customers run pattern A or B; most White-Label tier customers run pattern C.

How does provisioning work? Can I integrate with my billing system?

We expose a REST API for tenant provisioning, IP assignment, suspension and reporting. Our reseller engineer will set up the integration with WHMCS, FastSpring, Stripe Connect, ChartMogul, Customer.io or whatever billing stack you run; we have done it for several agencies already. The typical integration is around 4–8 hours of joint engineering work, included in the Agency and White-Label tier setup.

What if one of my reseller clients gets blacklisted or causes an abuse incident?

IP isolation matters here. Because each of your clients lives on their own VMTAs and dedicated IPs, an abuse event affects only that client — not your other clients, and not your reputation overall. We work the abuse case directly with your client (or with you if you prefer pattern A support), and the resolution does not touch your other tenants. Compare this to reselling a shared SMTP product, where one bad apple poisons the pool and every other reseller client suffers.

Can I bring my own IPs?

Yes, on White-Label tier. We can announce your /24 over BGP from our datacenters, configure rDNS, manage abuse forwarding and warm them up under your direction. This is uncommon — most resellers prefer to lease IPs from us — but for partners with existing reputation on their own IPs we make it work. Bring-your-own-IP is included on White-Label, available as a paid add-on on Agency.

What happens to my clients if our partnership ends?

On the Agency tier, contractual exit terms guarantee a 60-day migration window where the infrastructure stays online while you move your clients elsewhere. On the White-Label tier, the MSA includes IP transfer rights — IPs assigned to your pool can be reassigned to your account at another provider with documented reputation history, subject to Internet routing realities. We have not had a White-Label partner exit in three years, but we have written the off-ramp into the contract because you should not commit a B2B revenue stream to anything without one.

How is this different from being a Mailjet or Mailgun affiliate?

Affiliate programmes pay you a one-time bounty or a small recurring percentage of the sub-account revenue, with the customer relationship belonging to the SaaS vendor. Our reseller programme inverts that: the customer relationship belongs to you, the price-setting belongs to you, the brand belongs to you. We are the supplier; you are the seller of record. The economic difference is large — affiliate commissions cap around 20–30% of a small base; reseller margins start at 35% of a much larger base because the price tag of dedicated infrastructure is meaningfully higher than the price tag of a shared SaaS sub-account.

What is the minimum commitment?

Reseller Entry: month-to-month, billed quarterly. Reseller Agency: 6-month minimum, then quarterly. Reseller White-Label: 12-month annual contract with quarterly milestones, renewing on mutual agreement. We do this because the infrastructure investment per partner is real — IP allocations, VMTA configurations, dedicated engineering time — and we cannot run that economic model on month-to-month at the upper tiers.

Ready to sell email infrastructure under your own brand?

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