Interoperatibility with mobile messaging applications (Signal, Telegram, etc.)

Let’s collect some information on applications that we might want to include by default in Tails.

The research we did so far lives in 2 documents:

• https://tails.boum.org/blueprint/mobile_messaging/
• https://gitlab.tails.boum.org/tails/summit/-/wikis/Research/Better-communication-tools

Data points from user research:

• https://tails.boum.org/contribute/how/user_experience/interviews/daniel/
• Hot topics during the training in Mexico (#18922 (closed)) and Brazil (#19103 (closed))