Signal is suggested, but it requires a mobile phone, which is not an option for me. That's why I use matrix, but I fear it will not catch on enough, and email

Signal is suggested, but it requires a mobile phone, which is not an option for me. That's why I use matrix, but I fear it will not catch on enough, and email will be the only option people will have to contact me. But I somehow agree that encrypting email is not an option as there are too much complications to it.