We have received reports that Proton is currently blocked in Russia. We are reaching out to the appropriate authorities to get the block lifted as soon as possible. While this block continues to affect ProtonMail, ProtonVPN is not blocked.
At the moment, we suggest using ProtonVPN to connect to one of our VPN servers outside of Russia to access ProtonMail.
If you are not a ProtonVPN user yet, you can download and install the ProtonVPN application for your device, log in with your existing ProtonMail account, and connect to a server. You can find a complete setup guide for new users here: https://protonvpn.com/support/protonvpn-setup-guide/
Another workaround to access the ProtonMail website is to use a TOR browser by following the steps below: