p0ntus mail.

Using Vaultwarden on Firefox

STEP ONE
Install the Bitwarden extension from the Firefox Add-ons page
STEP TWO
Sign up for p0ntus mail Vaultwarden if you haven't already.
STEP THREE

Open the Bitwarden extension, and click (under the small 'servers' label) bitwarden.com, changing it to self hosted. This will bring up a dialog. Enter "https://vaultwarden.p0ntus.com" in the server URL, and leave the rest of the fields blank. It should now change 'bitwarden.com' to 'self hosted'.
STEP FOUR

Enter your email and password, and click 'Log in'.
You are now logged in, and you can use all of the features of Vaultwarden!