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Software · head to head

Courier vs Mailjet

Courier logo

Courier

Software

Notification infrastructure API for sending messages across channels

From
Free
Rated
-
Full reviewWebsite
Mailjet logo

Mailjet

Software

Email API, SMTP relay and campaign platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Courier enterprise-only features like RBAC and EU data residency require a custom sales conversation rather than a published plan.; Mailjet free plan caps at 6,000 emails per month with a hard 200 emails per day limit

Where they differ

Only the attributes on which Courier and Mailjet actually diverge.

Attributes where Courier and Mailjet differ
AttributeCourierMailjet
Pricing modelusage-basedfreemium
Platformsweb, apiWeb

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Courier

  • Multi-channel sending
  • Journeys and broadcasts
  • Digest and batching
  • AI translations
  • MCP server and CLI
  • Role-based access control

Only in Mailjet

Nothing recorded that Courier does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Courier

  • Sending notifications across email, SMS, and push from one APInot Mailjet
  • Building automated notification journeysnot Mailjet
  • Digesting multiple alerts into a single messagenot Mailjet
  • Localizing notification content with AI translationnot Mailjet

Mailjet

No use cases recorded yet. See the Mailjet review.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Courier

  • Enterprise-only features like RBAC and EU data residency require a custom sales conversation rather than a published plan.
  • Pay-as-you-go per-send pricing on Business can become costly at very high volume compared to flat committed pricing elsewhere.
  • The free Developer tier is capped at 10,000 sends per month, which is limiting for growing production apps.

Mailjet

  • Free plan caps at 6,000 emails per month with a hard 200 emails per day limit
  • Starter plan is capped at 2,000 contacts; unlimited contacts require the Essential tier
  • Email credits do not roll over and unused emails expire at the end of each billing cycle
  • Essential and Premium plans both cap at 15,000 emails per month for $17 and $27 respectively, so the price increase buys other features, not more volume

Pricing, plan by plan

Courier

Free
  • DeveloperFree
    • 10,000 sends/month
    • Journeys and broadcasts
    • MCP server, CLI, and SDKs
  • Business$undefined/month
    • $0.005 per send pay-as-you-go
    • AI translations
    • AI agent node
  • Enterprise$undefined/month
    • Volume discounts
    • Dedicated Slack channel
    • Role-based access control

Mailjet

Free

No published plan breakdown. See the Mailjet review.

Which should you pick?

Choose Courier if

  • You need multi-channel sending.
  • You want to start without paying.
  • You work on web, api.
  • You also want journeys and broadcasts.
Courier review

Choose Mailjet if

  • You want to start without paying.
Mailjet review

Questions people ask

Is Courier or Mailjet better?
Neither clearly leads. Courier starts at Free and Mailjet at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Courier or Mailjet?
Courier starts at Free and Mailjet at Free.
Does Courier or Mailjet run on more platforms?
Courier runs on web, api. Mailjet runs on Web.
Can I use Courier for free?
Both have a free tier, so you can try either at no cost before committing.
What is Courier best used for?
Courier is most often used for sending notifications across email, sms, and push from one api, building automated notification journeys, digesting multiple alerts into a single message, localizing notification content with ai translation. Of those, sending notifications across email, sms, and push from one api and building automated notification journeys are not what Mailjet is typically brought in for.
What can Courier do that Mailjet cannot?
Courier covers Multi-channel sending, Journeys and broadcasts, Digest and batching, AI translations.

Answered from the vendors’ own pages

Courier: What does Courier cost?

Courier has three plans: Developer is free for 10,000 sends per month, Business is pay-as-you-go at $0.005 per send, and Enterprise is custom-priced with volume discounts.

Source
Courier: Is there a free plan, and what are its limits?

Yes, the Developer plan is free and includes 10,000 notification sends per month along with journeys, broadcasts, the MCP server, CLI, SDKs, and email support.

Source
Courier: How is usage metered?

Courier bills based on the number of notifications sent, not on team size or number of channels used, with Business plan sends charged at $0.005 each.

Source
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