Test ⤳ Send ⤳ Control

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Test emails

Use Email Sandbox to inspect and debug emails in staging, dev, and QA environments sending them to recipients in production

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Fake SMTP

Fake SMTP

Catch testing emails from staging. Preview each email in your Maildefiner inbox. Never send test emails to the users by mistake.

QA

QA Automation

Cover all your testing scenarios with Sandbox API. Integrate with your favorite environment. Run automated tests and validate each email.

HTML check

HTML Check

Validate HTML/CSS of your email templates. See how different popular clients will treat your emails – on web, mobile, and desktop.