Both Mailjet and Spreeflo have MCP servers — what is the difference?

Mailjet’s official open-source MCP server is read-only by default, exposing statistics, templates and contacts with write access opt-in, so an agent can report on your account but not build in it. Spreeflo’s hosted MCP server exposes the authoring surface directly — an agent creates journeys, campaigns, segments, forms and email templates — and refuses sends, publishes and deletes server-side, which is the safety boundary rather than a capability gap.

Does Mailjet include marketing automation on its cheapest plans?

No — Mailjet’s Free and Starter tiers include no automation builder and no segmentation, both of which begin at Essential, and A/B testing is restricted to Premium. Spreeflo includes the full journey builder, A/B testing through its random-split node, and unlimited nested AND/OR segmentation on the $16 Starter plan, which is its first paid tier.

Which is better for transactional-heavy sending?

Mailjet is built as sending infrastructure — transactional on every plan including Free, priced on volume — so an application pushing millions of API messages sends more cheaply there. Spreeflo includes transactional email from the $16 Starter plan on the same contact record as marketing, which fits a business sending receipts and campaigns to the same people: one sending reputation, one audience, and lifecycle automation around both rather than a separate marketing tool bolted on later.

Is Mailjet cheaper than Spreeflo at 5,000 contacts?

Usually yes, because the two bill on different axes — Mailjet Essential is about $17/mo for 15,000 emails with unlimited contacts, while Spreeflo is $36/mo Starter for 5,000 marketing contacts. If your 5,000 contacts receive weekly campaigns plus automated journeys, Mailjet’s volume tier climbs and the gap narrows; if they are mailed monthly, Mailjet stays cheaper.

All Spreeflo comparisons

Spreeflo vs Mailjet: Which is better? (2026)

16 Spreeflo wins · 6 tied · 4 Mailjet wins

Marketing and transactional email behind one API, with SMTP relay, EU data residency and volume-based pricing.

Last verified: August 2026 27 points compared

See pricing

Should you choose Spreeflo or Mailjet?

Mailjet is the sensible pick for a European team that needs marketing and transactional email behind one API with data staying in the EU. Volume pricing with unlimited contacts is genuinely cheaper than contact-based billing for a large, infrequently-mailed list, the SMTP and REST APIs are mature, and Sinch publishes an official open-source MCP server — which is more than most platforms this size can say.

The marketing half is the thin half. There is no automation or segmentation on the Free or Starter tiers at all, A/B testing is locked to Premium, there are no popups, no browser push and no website analytics. And the MCP server, while real and first-party, is read-only by default: it surfaces stats, templates and contacts, with writes opt-in.

That last point is the cleanest way to state the difference. Mailjet’s MCP reads your data; Spreeflo’s builds your marketing — an agent can create journeys, segments, forms and email templates, while sends, publishes and deletes are refused at the server. Spreeflo also puts the full journey builder, A/B testing and unlimited nested segmentation on its $16 first paid tier rather than spreading them across three.

What Spreeflo is

Spreeflo is an AI-powered marketing automation platform for founders and small teams — email, browser push notifications, forms and web analytics on one contact record, from $16/mo ($13 billed annually). Its AI writes per-recipient personalization at send time, an in-app AI assistant builds automations from plain language, and a hosted MCP server lets Claude, Claude Code or Cursor operate the whole workspace — while sends, publishes and deletes always require a person.

Founder-led businesses, one workspace. Sends, publishes and deletes always require a person — including when an AI agent is doing the building.

What Mailjet is

Mailjet sends marketing and transactional email from one account, with SMTP relay, REST APIs, webhooks, EU data residency and unlimited contacts from the Essential tier upward. Automation and segmentation begin at Essential and A/B testing at Premium. Its MCP server is open source and read-only by default.

Founded 2010 in France. Acquired via Mailgun/Pathwire by Sinch in 2021.

Spreeflo vs Mailjet: feature comparison

The same 27 points on every comparison we publish, including the ones Spreeflo loses. Rows marked Both are genuine ties; descriptive rows like the pricing model are shown but not scored.

16 Spreeflo wins 6 tied 4 Mailjet wins

Feature and pricing comparison between Spreeflo and Mailjet, verified August 2026.
Feature	Spreeflo	Mailjet
Pricing
Starting paid price	Spreeflo: $16/mo — $13/mo billed annually (1,000 marketing contacts)	Mailjet: Starter $9/mo — 8,000 emails, 2,000 contacts Wins
Free plan What it meaningfully includes	Spreeflo: ✓ Forms with unlimited responses, unlimited non-marketing contacts, full web analytics. No card.	Mailjet: ✓ 6,000 emails/mo (200/day) with APIs, SMTP and webhooks included Wins
Pricing model	Spreeflo: Contact-based — billed on marketing contacts only	Mailjet: Email-volume based; contacts unlimited from the Essential tier
Free storage for contacts you don’t market to Unsubscribed, archived and non-marketing contacts	Spreeflo: ✓ Unlimited, free	Mailjet: ✓ Unlimited contacts from Essential Both
Price at ~5,000 contacts	Spreeflo: $36/mo Starter · $52/mo Professional ($30 / $43 billed annually)	Mailjet: Essential $17/mo — 15,000 emails and unlimited contacts, if your send volume fits Wins
Channels
Marketing email	Spreeflo: ✓ Starter	Mailjet: ✓ Both
Transactional email	Spreeflo: ✓ Starter — same plan, no separate product	Mailjet: ✓ On every plan including Free — the core of the product Wins
Browser push notifications	Spreeflo: ✓ Professional Wins	Mailjet: ✕
Forms with unlimited responses on free	Spreeflo: ✓ Free plan Wins	Mailjet: ~ Basic signup forms only; no forms product on the free plan
Popup forms	Spreeflo: ✓ Professional Wins	Mailjet: ✕
Web analytics dashboard	Spreeflo: ✓ Free plan Wins	Mailjet: ✕ Campaign click heatmaps only
AI / bot crawler traffic tracking	Spreeflo: ✓ AI-answer fetches, indexing and training crawlers reported separately Wins	Mailjet: ✕
SMS	Spreeflo: ✕	Mailjet: ✕ Sold separately by Sinch Both
Built-in CRM	Spreeflo: ✕	Mailjet: ✕ Both
Automation
Visual journey builder	Spreeflo: ✓ Starter Wins	Mailjet: ~ Automation builder from Essential; nothing below it
Behavioral / custom-event triggers	Spreeflo: ✓ Professional Wins	Mailjet: ~ Contact-property and API driven rather than site events
Form-submission trigger	Spreeflo: ✓ Starter	Mailjet: ✓ Both
A/B testing	Spreeflo: ✓ Starter — random-split node in the builder Wins	Mailjet: ✕ Premium tier only (up to 10 variants)
Full automation on the lowest paid tier	Spreeflo: ✓ Full builder on Starter, no step or workflow caps Wins	Mailjet: ✕ No automation and no segmentation on Free or Starter
AI & agents
AI copy written per recipient at send time	Spreeflo: ✓ AI variables, Professional Wins	Mailjet: ✕ AI content and templates from Essential
In-app AI that builds automations from plain language	Spreeflo: ✓ Starter — stages proposals for approval Wins	Mailjet: ~ AI-aided content and segmentation, not automation authoring
Official MCP server	Spreeflo: ✓ Every plan, including Free	Mailjet: ✓ Official open-source MCP server, published October 2025 Both
AI agent can build automations over MCP Not just read contacts and stats	Spreeflo: ✓ Journeys, campaigns, segments, forms and email templates Wins	Mailjet: ~ Read-only by default — stats, templates and contacts, with writes opt-in
Data
Nested AND/OR segmentation	Spreeflo: ✓ Starter — unlimited nesting Wins	Mailjet: ~ Essential and above; not on Free or Starter
Custom events as triggers and segment conditions	Spreeflo: ✓ Tracking on Free · triggers and segment conditions on Professional Wins	Mailjet: ~ Contact properties via API rather than event streams
Custom objects on the contact record Orders, subscriptions or accounts as related records, not just flat attributes	Spreeflo: ✓ Professional — orders, subscriptions and accounts linked to the contact Wins	Mailjet: ✕ Contact properties only
Multi-touch revenue attribution Credit split across touches, not only the last click	Spreeflo: ✓ Last-touch and linear (multi-touch) models, with a lookback window Wins	Mailjet: ✕

Spreeflo prices shown are for 1,000 marketing contacts unless the row says otherwise. Mailjet figures were last checked in August 2026 — pricing moves, so confirm on their site before deciding.

Where Spreeflo and Mailjet differ

The two tools are built around different assumptions, so some of what Mailjet covers has no Spreeflo equivalent. Here is exactly what that is, who it actually matters for, and what Spreeflo does in its place.

Deeper transactional and SMTP tooling

Mature SMTP relay, REST APIs, webhooks and per-message logs on every plan including Free. Spreeflo sends transactional email from Starter on the same contact record as marketing, rather than competing on raw API surface — so a receipt and a lifecycle campaign share one reputation, one audience and one set of analytics.

EU data residency

European hosting with GDPR positioning built in, which for some teams is a procurement requirement rather than a preference. Spreeflo does not offer regional residency, and for teams without that requirement the trade buys automation Mailjet reserves for its Essential and Premium tiers.

Volume pricing with unlimited contacts

From Essential upward you store as many contacts as you like and pay for emails sent, which suits a large dormant list. Spreeflo bills marketing contacts only and stores non-marketing ones free, so the two models converge for anyone actually mailing the list — and Spreeflo includes the journey builder in the price either way.

A longer developer track record

Fifteen years of SDKs and integration examples, backed by Sinch. Spreeflo’s API is younger and smaller, and its answer to integration is a different one: roughly 67 MCP tools that let an AI agent do the wiring, on every plan including Free.

Where Spreeflo comes out ahead of Mailjet

16 of 26 scored rows go Spreeflo’s way — for these reasons:

Mailjet is sending infrastructure first, so most of these wins concern the marketing layer above it. Automation and segmentation begin at Essential and A/B testing at Premium — they exist, just not on the plans the headline prices describe. Browser push, popups, an analytics dashboard, custom objects and revenue attribution are absent at every tier. Its MCP server is real and first-party but read-only by default, where Spreeflo’s authors journeys, segments, forms and templates.

Spreeflo is a marketing automation platform rather than a CRM, a page builder or an SMS gateway. The comparison above marks every row where that shows — nothing is hidden in a footnote.

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Sources

Mailjet pricing and features last checked August 2026, from: