Similar to Proton_Mail

Bitwarden

Mozilla Thunderbird

Messaging Layer Security

Avidemux

HTTPS Everywhere

JEdit

Mined (text editor)

Privoxy

ScummVM

Telegram (platform)

TestDisk

Tor Browser

Ardour (software)

AbiWord

Audacity (audio editor)

Frescobaldi (software)

MediaWiki

UBlock Origin

Have I Been Pwned?

Email

Internet abuse

AOL Mail

Biff (Unix)

Distributed Sender Blackhole List

GNU Mailman

Google Groups

HTML email

.mail