Proton Mail contacts → Android system address book.
A GPL-3.0 Android app that signs in to a Proton Mail account, decrypts the user’s contacts client-side, and exposes them to ContactsContract so they appear in the system Contacts app (and any other app that reads contacts) the same way WhatsApp or Telegram surface their own contact directories.
deleted by creator
I’m not trying to be. Did you mistake what this means or something?
What does it mean?
https://www.theidioms.com/black-book/