MailHog Email Testing Tool

A self-hosted email testing tool for developers based on Go

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What is MailHog Email Testing Tool?

MailHog is an email testing tool for developers that allows them to configure their applications to use MailHog for SMTP delivery. It provides a web UI to view messages and an API to retrieve and delete messages. MailHog can also be used to release messages to real SMTP servers for delivery. It is built with Go and can be installed without any dependencies on multiple platforms.


  • MailHog is an email testing tool for developers.
  • It allows you to configure your application to use MailHog for SMTP delivery.
  • MailHog provides a web UI for viewing messages and a JSON API for retrieving them.
  • It supports features like SMTP AUTH, PIPELINING, and Chaos Monkey for failure testing.
  • MailHog is built with Go and runs without installation on multiple platforms.


  • Easy to install and use.
  • Provides a web UI to view email messages.
  • Can simulate real SMTP servers for testing purposes.


  • Limited documentation and support available for troubleshooting.
  • Interface design is not user-friendly and can be confusing to navigate.
  • Limited customization options and features compared to other email testing tools.
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