I highly recommend using Signal for your DnD group chat, Tor to look up hummus recipes and an encrypted email for your wedding RSVPs. The more people are using this sort of thing for completely innocuous stuff the less suspicious it becomes, and as a bonus you feel like you're doing something helpful while you're working out minicabs and compiling your Auntie Mary's dietary requirements.
@afewbugs
I use Signal for my DnD group chat and it's an excellent tool for this purpose.
Also an excellent tool for sharing photos of cats