You can invite someone to Signal using the "Invite Friends" menu in the app, which will send a text message or email.

It's far more powerful than most people think. There are plenty of iMessage features that most people don't know or don't use that can make iMessage the best messaging app. 00:00:00 Pinning people to ...

Texting is only for transmitting unimportant information or short and simple messages, not for an in-depth conversation. More ...