Mailtrap

Modern Email Delivery for developer & product teams Starting at ~$0/hour.

Install Add-on

Email Sandbox

Mailtrap provides a safe test environment for developers to inspect and debug emails in staging, dev, and QA. It captures all SMTP traffic in a sandbox, eliminating the risk of spamming real recipients.

HTML/CSS & Spam Checking

Preview your emails to ensure they render correctly and analyze your content for its spam score. This allows you to find and fix potential deliverability issues before your code ever reaches production.

Flexible API

Integrate quickly with SDKs for major languages and a well-documented API to automate your test flows. Build and manage your testing scenarios, integrating Mailtrap directly into your CI/CD pipeline to streamline development.

24/7 tech support

Engineers and deliverability experts who are always ready to assist you with any issue. Urgent cases are addressed immediately.

Industry-best analytics

Powerful helicopter-view dashboards to troubleshoot and debug your emails. Analyze email headers, validate HTML/CSS, and view the raw source. This makes it much faster to dig into both the content and the source of your emails.

Safe Environment & Team Scaling

A 100% safe testing environment that scales with your team. Manage access for colleagues, share test inboxes for specific projects, and keep all your testing data organized in one place.

Region Availability

The available application locations for this add-on are shown below, and depend on whether the application is deployed to a Common Runtime region or Private Space. Learn More

  • Common Runtime
  • Private Spaces
Region Available
United States Available
Europe Available
Region Available Installable in Space
Dublin Available
Frankfurt Available
London Available
Montreal Available
Mumbai Available
Oregon Available
Singapore Available
Sydney Available
Tokyo Available
Virginia Available

Plans & Pricing

    • Test emails per month 100
    • Sending limits per 10s 5
    • Inboxes 1
    • Team members 0
    • Max emails per inbox 50
    • API
    • Inbox email address
    • Email size 5 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 0
    • Manual forwarding recipients 0
    • Projects 1
    • Priority support
    • Single sign-on (SSO)
    • Test emails per month 5,000
    • Sending limits per 10s 10
    • Inboxes 5
    • Team members 0
    • Max emails per inbox 200
    • API
    • Inbox email address
    • Email size 7 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 100
    • Manual forwarding recipients 10
    • Projects 5
    • Priority support
    • Single sign-on (SSO)
    • Test emails per month 15,000
    • Sending limits per 10s 25
    • Inboxes 15
    • Team members 20
    • Max emails per inbox 400
    • API
    • Inbox email address
    • Email size 10 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 500
    • Manual forwarding recipients 25
    • Projects 15
    • Priority support
    • Single sign-on (SSO)
    • Test emails per month 50,000
    • Sending limits per 10s 50
    • Inboxes 40
    • Team members 40
    • Max emails per inbox 600
    • API
    • Inbox email address
    • Email size 15 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 2K
    • Manual forwarding recipients 100
    • Projects 40
    • Priority support
    • Single sign-on (SSO)
    • Test emails per month 100,000
    • Sending limits per 10s 100
    • Inboxes 80
    • Team members 80
    • Max emails per inbox 800
    • API
    • Inbox email address
    • Email size 20 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 5K
    • Manual forwarding recipients 100
    • Projects 80
    • Priority support
    • Single sign-on (SSO)
    • Test emails per month 10,000,000
    • Sending limits per 10s 150
    • Inboxes 300
    • Team members 999
    • Max emails per inbox 1,000
    • API
    • Inbox email address
    • Email size 25 Bytes
    • Tech info and Bcc
    • Forwarded emails per month 10K
    • Manual forwarding recipients 300
    • Projects 300
    • Priority support
    • Single sign-on (SSO)
Install Add-on
$ heroku addons:create mailtrap

To provision, copy the snippet into your CLI or use the install button above.

Documentation