mailhog ☆
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Description:
Web and API based SMTP testing tool
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Developer tools
Tags: email smtp testing development mail-server
Install: brew install mailhog
About:
Mailhog is a tool for testing email during development. It creates a fake SMTP server that captures outgoing emails and provides a web interface to view them. This allows developers to test email functionality without sending real emails to users.
Key Features:
  • Built-in SMTP server that captures emails without sending them
  • Web UI for viewing captured emails with search and filtering
  • JSON API for automated testing and integration
  • HTTP API for releasing emails to real SMTP servers
Use Cases:
  • Testing email functionality in web applications during development
  • Debugging email templates and formatting issues
  • Automated testing of email delivery in CI/CD pipelines
Alternatives:
  • MailCatcher – Ruby-based alternative with similar functionality but requires Ruby runtime
  • FakeSMTP – Java-based SMTP server with GUI, requires Java runtime
  • smtp4dev – .NET-based alternative for Windows environments
Version History
Detected Version Rev Change Commit
Sep 14, 2024 9:10pm 0 VERSION_BUMP b76c68c3
Sep 29, 2023 5:59pm 0 VERSION_BUMP 75b16ff5
Mar 7, 2023 1:51pm 0 VERSION_BUMP ece3a484
Mar 7, 2023 1:51pm 0 VERSION_BUMP a91c36d2
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