Anonymous Email on Tor: Best .onion Mail Services (2026)

Anonymous email on Tor lets you sign up and send messages without a phone number, without your real IP, and without the tracking that follows ordinary webmail. This guide lists the .onion mail services indexed on Umbrixa, each with its live availability so you can see what is actually online right now.

Onion Mail — Free Anonymous Email | ProtonMail & Tuta Alternative Online
Onion Mail is a free anonymous email service designed to protect user digital identity and privacy, offering an alternative to ProtonMail and Tuta. The service operates as an official onion service accessible through Tor and provides support through Tox, with emphasis on anonymity-focused design principles.
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The Anonymous Email Service For The Dark Net - DNMX Online
Notice of domain change from .su to .cc Privacy Features Features of our anonymous mail service Freedom Of Speech We give people all around the world the freedom to communicate without being censored by authorities. Full Encryption We encrypt our servers with full disk encryption meaning if they fal
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[TorBox] The Tor Mail Box Online
TorBox is a hidden-service-only mail box: messages to and from TorBox never leave the Tor network, which keeps metadata inside Tor.
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Mailum - Secure Encrypted Email Service | Private & Anonymous Email Online
Mailum is an encrypted, anonymous email provider reachable over Tor, positioned as a privacy-first alternative to mainstream webmail.
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Underworld Email: is free encrypted & anonymous email. Online
Underworld Email is free encrypted & anonymous email service, manage emails in the normal network and in the onion network. Encrypt email with your PGP public key.
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PissMail!! Offline
PissMail is a free email service that provides anonymous email addresses with unconventional domain names, operational since 2021. The service currently has over 92,000 active users and is funded through voluntary Monero cryptocurrency donations to cover server and domain costs of approximately $300 annually.
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freemail & URL Shortner Unstable
A temporary email service offering disposable email addresses that function for either 10 minutes or longer durations, designed for users who need to register for services or verify accounts without exposing their real email address. The service helps maintain privacy and keep inboxes uncluttered by providing short-lived email addresses suitable for one-time use registrations and verifications.
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How to choose an anonymous email service

Look for three things: the service is reachable as a real .onion address (not just clearnet with a Tor page), it does not ask for a recovery phone or personal identity, and it has stable uptime. A mail service that is offline half the time will lose your messages. The uptime badge next to each listing above is measured by our own crawler.

Staying safe

Use Tor Browser to reach these services, keep JavaScript disabled on sites you do not trust, and remember that anonymous email protects the transport, not what you write. Do not reuse a password from another account. Umbrixa only lists services with legal use cases; the Tor network also hosts abusive services, so verify before you trust.

FAQ

What is the best anonymous email on Tor?
There is no single best: OnionMail servers, DNMX, TorBox and Mailum are all popular anonymous options. Pick one that is currently online and matches whether you need to email the clearnet or stay Tor-only.
Is .onion email free?
Most of the services listed here are free. Some ask for a small crypto payment to reduce spam or to unlock extra storage.
Can I email a normal Gmail address from a Tor mail service?
Some services (like OnionMail or DNMX) can send to the clearnet. Tor-only services such as TorBox intentionally cannot, which is a privacy feature, not a bug.