[jolmg]

I think I know the answer already, but just in case: is there a way to use Signal to communicate with users using Whatsapp? IOW, can I receive Whatsapp messages in Signal?

The only reason I use Whatsapp is because it's what all my contacts use. It's everywhere. It's the de facto standard for text communication. And I hate the app. I hate its guts.

I read that whatsapp implemented the signal protocol, does that mean anything with respect to being able to communicate with people using a different app? Because I was hoping so, but I can't find a way to see my whatsapp messages in signal.

[unnouinceput]

Yup, you guessed right. By default that's a no. However, you can do a cow-helicopter by using a 3rd party that will be a proxy between your signal account and your whatsapp account. Hell, you can do whatever you want between any 2 services with a 3rd party. Problem is, you still need an account on both ends.

[anoncake]

Neither the Signal guy nor Facebook like interoperability, so no.