Mailtrap Email Sandbox

About

Mailtrap Email Sandbox is ranked #4 of 28 in email testing software on Inferse. It runs on API, Web. There is a free plan. Paid plans start at $17/mo.

Compared on email testing software

Free plan

Yesmailtrap.io

Paid from

$14/momailtrap.io

Spam checks

Yesmailtrap.io

Inbox testing

Yesmailtrap.io

API access

Yesmailtrap.io

Facts

Purpose

Email Sandbox captures SMTP traffic from development and staging environments so teams can inspect test messages without delivering them to real recipients.mailtrap.io · 4 Oct 2026

Email analysis

Users can inspect message content and source, check spam scores, validate headers, and analyze HTML support across email clients.mailtrap.io · 4 Oct 2026

Testing workflow

The product provides separate sandboxes for different environments or review servers and lets users group them into projects.mailtrap.io · 4 Oct 2026

API and automation

The Sandbox API supports automated testing and the product page says API calls are unlimited.mailtrap.io · 4 Oct 2026

Integration

Email Sandbox works with apps or frameworks that support SMTP, and the setup page offers 20+ code samples.mailtrap.io · 4 Oct 2026

Compatibility previews

Device Previews can render emails as they appear in iOS Mail, Gmail, Outlook, and Apple Mail across mobile, desktop, and web.mailtrap.io · 4 Oct 2026

Team use

The maker describes developers, QA teams, marketers, and managers as users, with shared sandboxes and selected forwarding to whitelisted recipients.mailtrap.io · 4 Oct 2026

Not for delivery

Email Sandbox is a testing tool and is not designed to deliver emails to real email addresses.mailtrap.io · 4 Oct 2026

Plan limits

The Free tier includes 50 test emails per month and one sandbox; Enterprise includes unlimited test emails and 300 sandboxes.mailtrap.io · 4 Oct 2026

Integrations

Mailtrap lists integrations including Salesforce Email Sandbox, Heroku, Supabase, Vercel, and SDKs for languages such as Node.js, Python, PHP, Ruby, and Java.mailtrap.io · 4 Oct 2026

Security

Mailtrap states that it holds ISO/IEC 27001:2022 certification and complies with GDPR.mailtrap.io · 4 Oct 2026

Account security

The security page says Mailtrap enforces two-factor authentication for all users and supports TLS and HTTPS connections.mailtrap.io · 4 Oct 2026

Company and history

Mailtrap says it was built by Railsware engineers in 2011 after a staging system accidentally sent test emails to real customers.mailtrap.io · 4 Oct 2026

Support

The pricing page lists email support on Free, Basic, and Team, and email plus live chat on Business and Enterprise.mailtrap.io · 4 Oct 2026

Where it ranks on Inferse

• Best Email Testing Software in 2026#4 of 28

Sources

• mailtrap.io/email-sandbox/· checked 4 Oct 2026
• mailtrap.io/pricing/· checked 4 Oct 2026
• mailtrap.io/integrate-with/· checked 4 Oct 2026
• mailtrap.io/security-and-compliance/· checked 4 Oct 2026
• mailtrap.io/about-us/· checked 4 Oct 2026