Email Testing services

Email on Acid

Major Outage

Last checked Nov 5, 2026 1:06 PM UTC

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Email on Acid is an email testing and optimization platform that helps marketers preview, test, and validate email campaigns across different clients and devices before sending. It provides tools for spam testing, analytics, and ensuring email deliverability and rendering quality.

Litmus

Operational

Last checked Nov 5, 2026 12:35 PM UTC

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Litmus is an email testing and analytics platform that helps marketers and developers preview, test, and optimize email campaigns across different email clients and devices.

Mailcatch.app

Operational

Last checked Nov 5, 2026 12:56 PM UTC

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Mailcatch.app is an email testing and debugging service that allows developers to catch and inspect emails during application development and testing without sending them to real addresses. It provides a local email server alternative for development workflows.

Mailosaur

Operational

Last checked Nov 5, 2026 1:10 PM UTC

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Mailosaur is a testing platform that provides email and SMS testing services, allowing developers to create and validate email and SMS workflows programmatically.

Mailtrap

Operational

Last checked Nov 5, 2026 12:57 PM UTC

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Mailtrap is an email delivery and testing platform that helps developers sandbox, test, and debug email functionality before sending to production. It provides a safe environment for email testing with detailed inspection and analytics capabilities.