I love Signal. But despite my best efforts, I still have friends using WA and iMessage. Managing multiple apps is kinda a pain. Beeper offers a convenient way to combine them into one interface, and it claims to re-encrypt the content. Does anyone know anything about this claim?

From their website:

Messages sent using Beeper to other chat networks are re-encrypted if the other network supports encryption (like Signal, WhatsApp and iMessage).

So…Safe? Or no?