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MailHog

Email testing tool for developers that captures SMTP mail and shows it in a web interface with a JSON API.

MailHog is an email testing tool for developers. It is a Go program that runs an SMTP server with a web interface for viewing captured messages and an HTTP API. The README lists installs through Homebrew, go install, FreeBSD packages, Docker and release binaries, and its overview says applications are configured to use MailHog for SMTP delivery. The deployment guide says it can run locally from the command line or be started as a daemon. The README names MongoDB and file-based storage as options for keeping captured messages.

Identity

Status
Stub
Maintainer
Ian Kent2
Maintained by
Individual2
First release
20144

Rendering and deploy

Runs as
Dev only, Always on5
Install with
homebrew2

Releases

Current major version
13
Last release
2020-08-113

Adoption

GitHub stars
16,1981
Contributors
371

Why these figures do not compare

Sources

  1. 2026-11-03: links, Written in, License model, GitHub stars, Contributors
    api.github.com/repos/mailhog/MailHog
  2. 2026-11-03: links, Maintainer, Maintained by, Categories, Runtime, Install with, License, Admin interface, Databases
    github.com/mailhog/MailHog/blob/master/README.md
  3. 2026-11-03: Current major version, Last release
    github.com/mailhog/MailHog/releases/tag/v1.0.1
  4. 2026-11-03: First release
    github.com/mailhog/MailHog/releases/tag/0.01
  5. 2026-11-03: Runs as
    github.com/mailhog/MailHog/blob/master/docs/DEPLOY.md

Last reviewed · Listed since Edit on GitHubThis page as markdownas JSON