{"data":{"slug":"mailpit","name":"Mailpit","tagline":"MIT local/CI SMTP sink — MailHog successor, not delivery","category":"notifications","categoryName":"Notifications","url":"https://mailpit.axllent.org","github":"https://github.com/axllent/mailpit","pricing":"open-source","hook":"Mailpit catches SMTP in Docker and CI so you can read the email without sending it.","whatsGood":"MIT. Single Go binary, MailHog-compatible ports (1025/8025), web UI, REST API, search, TLS. Drop-in image swap from abandoned MailHog.","theCatch":"Sink only — not delivery. Not Resend SaaS, not Postal/Listmonk outbound. Do not point production MX here. Distinct from Resend/Postal/Listmonk.","verdict":"MIT MailHog successor for local/CI. Free forever; not a mailer.","addedAt":"2026-09-07","featured":false,"domain":"Comms","subSpecialty":"Email","subcategory":"Email","tags":["self-host","permissive","containers","active"],"capabilities":["smtp","testing","ci"],"surfaces":["Self-host"],"ecosystem":["Go","Multi-platform"],"licenseModel":"OSS/MIT","githubStars":10689,"starsPerWeek":48,"access":"free","archived":false,"repo":{"createdAt":"2022-07-29","pushedAt":"2026-10-17","license":"MIT","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"ntfy","name":"ntfy","tagline":"HTTP pub-sub notifications you can curl from cron"},{"slug":"novu","name":"Novu","tagline":"MIT notification workflows with a real 0 USD Cloud"},{"slug":"listmonk","name":"Listmonk","tagline":"AGPL-3.0 self-hosted newsletters and transactional mail"},{"slug":"apprise","name":"Apprise","tagline":"BSD-2-Clause CLI that talks to a hundred notifiers"},{"slug":"gotify","name":"Gotify","tagline":"MIT self-host push server; Android-first, no ntfy.sh twin"}],"links":{"self":"/api/gems/mailpit","html":"/gems/mailpit","markdown":"/gems/mailpit.md","category":"/api/gems?category=notifications","categoryPage":"/stacks/notifications"}}