Inbucket
v3.2.0
Inbucket is a disposable webmail server for testing email functionality in applications.18d agoMITDockerDemo
Self-hosted alternatives to Mailinator
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Projects
Email
Also in Email
Not listed as Mailinator alternatives, but they cover the same ground and are worth a look.
MailpitAn open-source SMTP mail catcher for developers: a self-hosted single binary or Docker image with a web UI, REST API, POP3 server and HTML, link and spam checks.
mailezA self-hosted email platform with SMTP, IMAP, POP3, CardDAV, CalDAV, a React webmail client, and admin console — all deployed via a single Docker Compose command.
MailcowOpen-source mail server suite providing email hosting with spam filtering, antivirus, webmail, calendar and contacts via Docker Compose installation.
MailuSelf-hosted open-source Docker-based mail server providing IMAP/SMTP services, webmail access, and admin interface. Replaces complex groupware setups.
mailcueMailCue is a self-hosted, open-source email testing server with Postfix, Dovecot, DKIM, DMARC, SpamAssassin, REST API, and React UI in one Docker container.
Forward EmailForward Email is a self-hosted, open-source email service with forwarding, encrypted mailboxes, SMTP/IMAP/POP3, CalDAV/CardDAV, and webhooks.
About these Mailinator alternatives
1 open-source, self-hosted alternatives to Mailinator are listed here, ranked by popularity, maintenance and documentation.
- Highest rated
- Inbucket (2 310 GitHub stars, MIT license, written in Go)
- Docker
- 1 of the top 1 ship an official Docker image
- Recently updated
- Inbucket v3.2.0 on 2026-10-10
Mailinator alternatives compared
| Project | License | Language | Stars | Docker | Setup | Latest release | Score |
|---|---|---|---|---|---|---|---|
| Inbucket | MIT | Go | 2 310 | Yes | — | v3.2.0 | 29 |