MailTub

MailTub is ranked #6 of 25 in disposable email services on The Geeks Club. It runs on Android, API, iOS, Linux, macOS, Self-hosted, Web, Windows.

Compared on disposable email services

Inbox lifetime: hours
Custom address: Yes
API access: Yes
Custom domain: Yes
Attachments supported: Yes

Best MailTub alternatives

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MailTub

Purpose: MailTub is a self-hosted disposable email service that creates temporary inboxes.
Real-time inboxes: New emails appear through WebSocket push, without polling.
Mailbox limits: A session can have up to five simultaneous inboxes, with expiry options of 1 hour, 6 hours, 24 hours, or 7 days.
User interface: The web interface supports dark, light, or system themes, and can be installed as a progressive web app on mobile and desktop.
Deployment: MailTub runs as a single Go binary with SQLite and an embedded React interface, and also provides Docker deployment.
Integrations: It provides a REST API, SMTP receiving, WebSocket updates, and a Prometheus-compatible metrics endpoint.
Optional caching: Mailbox caching can optionally use a Redis or Upstash URL.
Security: The admin panel stores its password as a bcrypt hash and uses HMAC-SHA256 signed session cookies with a 24-hour lifetime.
Rate limit: Mailbox creation is limited to 20 per IP per hour.
Email size limits: Defaults include a 25 MiB SMTP message limit, a 25 MiB per-attachment cap, and a 50 MiB total attachment cap per email.
Support and security contact: The project asks users to report vulnerabilities to [email protected].
License: The repository identifies the project as Apache 2.0 licensed.
Real-time email: New emails appear through WebSocket push, which the project says delivers them in milliseconds without polling.
Inbox limits: A session can have up to five simultaneous inboxes, with mailbox expiry choices of 1 hour, 6 hours, 24 hours, or 7 days.

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Where it ranks on The Geeks Club

Best Disposable Email Services in 2026#6 of 25

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Sources

github.com/dml-labs/mailtub· checked 30 Sept 2026