Access all Proton services with the Tor anonymity network
Proton has an official onion website for Tor users.
What is Tor?
When you connect to the internet via Tor, your internet is routed through a worldwide, volunteer network of relays that conceal your location and activity from anyone trying to monitor you.


Why use Tor?
No network snooping
Routing your traffic to Proton through the Tor network makes it difficult to trace your internet connection to know that you are using a Proton service.
No man in the middle
Tor applies extra encryption layers on top of your connection, making it more difficult for an advanced attacker to perform a man-in-the-middle attack on your connection to our servers.
Anonymous connection
Tor also makes your connections to Proton anonymous. We will not be able to see the true IP address of your connection to Proton.
Circumvent censorship
Tor can also help with Proton accessibility. If our services become blocked in your country, it may be possible to reach us by going to our onion site.
Things to keep in mind when using Tor
Even without using Tor, Proton’s services are secured with end-to-end encryption, secure authentication (SRP), and optional two-factor authentication. Most people will not need to use our Tor encrypted email or Tor encrypted file storage access. However, if you are an activist in a sensitive situation, our onion site provides an extra layer of anonymity and protection.

How to use Tor

Tor for desktop
The easiest way to browse onion websites is to download Tor Browser. Tor Browser is almost the same as the popular Firefox web browser, but it has built-in support for Tor. Simply downloading Tor Browser will let you visit onion websites right away.

Tor for mobile
The Tor Project endorses the following mobile apps for browsing onion sites on mobile: