Does Mailgun do marketing campaigns?

No, and deliberately so — Mailgun is a sending API with a template builder and validation, with no campaign editor, no automation and no segmentation, and Sinch directs marketing use cases to its sister product Mailjet instead. Spreeflo includes campaigns, journeys, segmentation, forms and browser push alongside transactional sending on one bill from $16/mo.

Can Claude use Mailgun?

Yes — Mailgun publishes an official first-party MCP server covering sending, message logs and validation, which is a genuinely useful surface for an agent debugging or dispatching mail. Spreeflo’s MCP server covers the marketing layer instead: an agent can build journeys, campaigns, segments, forms and templates, on every plan including Free, while sends and publishes are refused server-side.

Should I use Mailgun and Spreeflo together?

It is a reasonable pattern at scale — keep Mailgun for high-volume application mail where its per-email economics and logs matter, and run marketing in Spreeflo. Below serious volume the simpler answer is usually one tool: Spreeflo includes transactional email on the $16 Starter plan, so receipts and campaigns share a contact record, a sending reputation and one set of analytics.

What does Mailgun cost at low volume?

Basic is $15/mo for 10,000 emails, though log retention drops to a single day at that tier and a dedicated IP costs $59/mo until you reach the $90 Scale plan. Spreeflo is $16/mo for 1,000 marketing contacts with transactional sending, the journey builder, unlimited nested segmentation and A/B testing all included in that price.

All Spreeflo comparisons

Spreeflo vs Mailgun: Which is better? (2026)

19 Spreeflo wins · 3 tied · 3 Mailgun wins

A developer-focused email sending API and SMTP relay with address validation, detailed logs and EU or US data centres. It has no campaign or automation tooling by design.

Last verified: August 2026 27 points compared

See pricing

Should you choose Spreeflo or Mailgun?

Mailgun does one job properly. The API is well documented, address validation is built in rather than bolted on, message logs are detailed enough to debug real delivery problems, and EU or US data residency is a checkbox. Developers reach for it because it gets out of the way.

It has no campaigns, no automation and no segmentation, and that is deliberate rather than a gap — Sinch points marketing use cases at Mailjet instead. The constraints worth knowing are commercial: log retention drops to one day on the $15 Basic plan, a dedicated IP costs $59/mo below the Scale tier, and several useful features are locked to $90 Scale.

So this is less a competitor than an adjacent tool, and many teams run both. The comparison matters at the point where you realise you need to decide what to send and to whom, not just how. Spreeflo covers that half — journeys, segmentation, forms, browser push, analytics and per-recipient AI copy — and includes transactional sending in the same $16 plan, which for founder-scale volume removes the second vendor entirely.

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 Mailgun (Sinch) is

Mailgun is email infrastructure: a REST API and SMTP relay with a template builder, address validation, webhook events and message logs, in EU or US data centres. Marketing campaigns are deliberately out of scope — Sinch sells Mailjet for that. Pricing runs from $15/mo for 10,000 emails to $90/mo for 100,000, with log retention and a dedicated IP tied to the higher tiers.

Founded 2010 through Y Combinator. Acquired by Sinch in 2021.

Spreeflo vs Mailgun: 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.

19 Spreeflo wins 3 tied 3 Mailgun wins

Feature and pricing comparison between Spreeflo and Mailgun, verified August 2026.
Feature	Spreeflo	Mailgun
Pricing
Starting paid price	Spreeflo: $16/mo — $13/mo billed annually (1,000 marketing contacts)	Mailgun: Basic $15/mo — 10,000 emails, with 1-day log retention Both
Free plan What it meaningfully includes	Spreeflo: ✓ Forms with unlimited responses, unlimited non-marketing contacts, full web analytics. No card. Wins	Mailgun: ~ A 100/day test tier
Pricing model	Spreeflo: Contact-based — billed on marketing contacts only	Mailgun: Volume-based; validations extra, dedicated IP $59/mo below the Scale tier
Free storage for contacts you don’t market to Unsubscribed, archived and non-marketing contacts	Spreeflo: ✓ Unlimited, free	Mailgun: — No contact storage model; billing is on volume
Price at ~5,000 contacts	Spreeflo: $36/mo Starter · $52/mo Professional ($30 / $43 billed annually)	Mailgun: ~$15–35/mo depending on send volume, with no contact-based charge Wins
Channels
Marketing email	Spreeflo: ✓ Starter Wins	Mailgun: ✕ Out of scope by design — Sinch sells Mailjet for this
Transactional email	Spreeflo: ✓ Starter — same plan, no separate product	Mailgun: ✓ The entire product Wins
Browser push notifications	Spreeflo: ✓ Professional Wins	Mailgun: ✕
Forms with unlimited responses on free	Spreeflo: ✓ Free plan Wins	Mailgun: ✕ No forms
Popup forms	Spreeflo: ✓ Professional Wins	Mailgun: ✕
Web analytics dashboard	Spreeflo: ✓ Free plan Wins	Mailgun: ✕ Sending logs rather than site analytics
AI / bot crawler traffic tracking	Spreeflo: ✓ AI-answer fetches, indexing and training crawlers reported separately Wins	Mailgun: ✕
SMS	Spreeflo: ✕	Mailgun: ~ Through Sinch, billed separately Wins
Built-in CRM	Spreeflo: ✕	Mailgun: ✕ Both
Automation
Visual journey builder	Spreeflo: ✓ Starter Wins	Mailgun: ✕ No automation tooling
Behavioral / custom-event triggers	Spreeflo: ✓ Professional Wins	Mailgun: ✕ Your code decides what to send
Form-submission trigger	Spreeflo: ✓ Starter Wins	Mailgun: ✕
A/B testing	Spreeflo: ✓ Starter — random-split node in the builder Wins	Mailgun: ✕
Full automation on the lowest paid tier	Spreeflo: ✓ Full builder on Starter, no step or workflow caps Wins	Mailgun: ✕ There is no automation at any tier
AI & agents
AI copy written per recipient at send time	Spreeflo: ✓ AI variables, Professional Wins	Mailgun: ✕ No product AI
In-app AI that builds automations from plain language	Spreeflo: ✓ Starter — stages proposals for approval Wins	Mailgun: ✕
Official MCP server	Spreeflo: ✓ Every plan, including Free	Mailgun: ✓ Official first-party server (mailgun/mailgun-mcp-server), plus Sinch MCP Both
AI agent can build automations over MCP Not just read contacts and stats	Spreeflo: ✓ Journeys, campaigns, segments, forms and email templates Wins	Mailgun: ~ Sending, logs and validation — there is no marketing surface to author
Data
Nested AND/OR segmentation	Spreeflo: ✓ Starter — unlimited nesting Wins	Mailgun: ✕ No segmentation
Custom events as triggers and segment conditions	Spreeflo: ✓ Tracking on Free · triggers and segment conditions on Professional Wins	Mailgun: ~ Webhook delivery events rather than site events
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	Mailgun: ✕
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	Mailgun: ✕

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

Where Spreeflo and Mailgun differ

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

API depth and message logs

Granular delivery events, searchable logs and a well-documented REST API. Spreeflo has a REST API and webhooks on Professional, sized for marketing rather than for debugging delivery at volume.

Built-in address validation

Verify addresses before sending, billed separately. Spreeflo has deliverability optimisations and domain reputation protection but no standalone validation product.

Volume economics and EU data residency

Cheaper per email at scale, with a choice of EU or US data centres. Spreeflo prices on marketing contacts and offers no regional residency.

Where Spreeflo comes out ahead of Mailgun

19 of 25 scored rows go Spreeflo’s way — for these reasons:

Mailgun is infrastructure and Spreeflo is a marketing platform, so most of this table reflects a deliberate scope choice rather than a shortfall — Mailgun does not have campaigns, automation or segmentation because Sinch sells Mailjet for that. What follows is that the moment you need to decide who receives a message and when, Mailgun cannot answer it and you are buying a second product. Spreeflo includes transactional sending inside the $16 Starter plan alongside journeys, unlimited nested segmentation, forms, browser push and web analytics. Both publish official MCP servers; Mailgun’s covers sending, logs and validation, because there is no marketing surface behind it to author.

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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Spreeflo vs Mailgun: common questions

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Sources

Mailgun pricing and features last checked August 2026, from: