Accessing onion sites in Firefox

Tor is a hidden network that encrypts and anonymizes your internet connection, giving users increased security, privacy, and resistance to censorship. ProtonMail provides email access over the Tor network through our onion site at https://protonirockerxow.onion.

To access the ProtonMail onion site, you must first connect to Tor. An easy way to connect to Tor is by using the Tor browser, which you can download here. If you prefer not to use Tor browser, you can also install Tor on your computer or use ProtonVPN, which supports one-click Tor connection.

Visit our article about Tor setup to learn more.

Accessing onion sites in Firefox

If you are connected to Tor and using Firefox, there is another step you may have to follow to be able to access onion sites:

  1. In the Firefox address bar, type about:config and press Enter.
  2. Click “I accept the risk!”
  3. Type network.dns.blockDotOnion in the search bar.
  4. Make sure the value is false. If it is true, then right click on it and select Toggle.


You will now be able to access onion sites using Firefox.