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Mailtrap

Email sending API and SMTP service, plus a sandbox that catches test emails before they reach real inboxes.

Free plan + paidTransactional email services

Updated · AppBreakup editorial · Web

Visit MailtrapSee 6 alternatives

Is Mailtrap free?

Free plan, plus paid plans

Starting price:
$15/month for 10,000 emails
Free plan:
4,000 emails/month, 150/day

Checked on Mailtrap's site Nov 8, 2026

Full Mailtrap pricing and plans

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About Mailtrap

Mailtrap started as a fake SMTP server for developers: point your staging app at it and every outgoing email lands in a shared test inbox instead of a customer's mailbox. That Email Sandbox is still a core product, with HTML and CSS checks, spam scoring, previews and an API for automated QA. Mailtrap has since added a production Email API and SMTP relay for transactional and bulk email, with separate streams, logs, analytics, dedicated IPs on higher tiers and SDKs for common languages, plus a basic marketing campaign tool and inbound email for AI agents. The appeal is having testing and sending under one account, so the same templates move from staging to production. Sending and testing are priced separately: each has a free plan for small volumes, then monthly tiers by email volume or test-email count. It suits product teams and agencies that send app email and want a safe way to test it; teams needing heavy marketing automation will want a dedicated tool.

Best for: Developers and QA teams who want email testing and transactional sending from one service.

Mailtrap pricing (checked Nov 8, 2026)

Each line is quoted from Mailtrap's own site, with the page it came from.

Plan or termWhat it saysCheckedSource
Free plan4,000 emails/month, 150/dayNov 8, 2026mailtrap.io
Starting price$15/month for 10,000 emailsNov 8, 2026mailtrap.io
Email testing free plan50 test emails, 1 sandboxNov 8, 2026mailtrap.io
Full Mailtrap pricing and cheaper alternatives

Pros and cons

What works

  • Sandbox catches staging email so real users never get test messages
  • Sending and testing in one account with shared templates
  • Free tiers for both sending and testing

Why people leave

  • Free sending plan keeps only 3 days of logs and allows 150 emails a day
  • Testing and sending are separate subscriptions
  • Dedicated IPs only on the higher sending tiers

Mailtrap vs Twilio SendGrid, Postmark and Mailgun

From each app's listing and the prices verified on its own site. A dash means we haven't verified it yet.

AttributeMailtrapTwilio SendGridPostmarkMailgun
PricingFree plan + paidPaidFree plan + paidFree plan + paid
Verified price$15/month for 10,000 emails—$15 a month (Basic, 10,000 emails)$35/month for 50,000 emails
Free plan4,000 emails/month, 150/dayNoYes, 100 emails a monthYes, 100 emails/day
Open sourceNoNoNoNo
Self-hostableNoNoNoNo
PlatformsWebWebWebWeb

Top Mailtrap alternatives

See all 6
  1. 1Twilio SendGrid logo
    Twilio SendGrid

    Long-established email API at very high volumes, with a marketing campaign editor from the same vendor.

    68.8
  2. 2Postmark logo
    Postmark

    Focused on fast transactional delivery with clear per-email pricing and separate message streams.

    64.8
  3. 3Mailgun logo
    Mailgun

    Developer email API with built-in validation and a free tier, owned by Sinch.

    61.8
  4. 4Resend logo
    Resend

    Developer-first sending API with React Email templates and a generous free tier, simpler setup than most senders.

    57.5
  5. 5Brevo logo
    Brevo

    Transactional email plus marketing campaigns, SMS and CRM in one account.

    51.2

Why people left Mailtrap

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

No switching stories yet. If you moved away from Mailtrap, review the app you switched to and tell us why.

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Mailtrap: common questions

What is Mailtrap?

Mailtrap: Email sending API and SMTP service, plus a sandbox that catches test emails before they reach real inboxes. Best for developers and QA teams who want email testing and transactional sending from one service. Available for Web.

Is Mailtrap free?

Mailtrap has a free plan and paid plans. Free plan: 4,000 emails/month, 150/day (checked on Mailtrap's own site).

How much does Mailtrap cost?

Mailtrap is free with paid plans. Free plan: 4,000 emails/month, 150/day; Starting price: $15/month for 10,000 emails; Email testing free plan: 50 test emails, 1 sandbox. Checked on Mailtrap's own site, November 2026.

Is Mailtrap open source?

No, Mailtrap is not open source.

What platforms does Mailtrap run on?

Mailtrap is available for Web.

What are the best alternatives to Mailtrap?

The highest-ranked Mailtrap alternatives right now are Twilio SendGrid, Postmark and Mailgun. See the full ranked list for pricing, platforms and verified facts.

Mailtrap vs Twilio SendGrid: what's the difference?

Mailtrap is free with paid plans; Twilio SendGrid is a paid product. Both run on Web.

See all 6 Mailtrap alternatives