Possibly not for a five-year-old, but most people have an email account, and technically this is a federated network. Tuta, Proton, Posteo, and all the others are independent networks, but they can communicate with each other (unlike Facebook, Twitter, and others which require an account on each platform for communication).
Possibly not for a five-year-old, but most people have an email account, and technically this is a federated network. Tuta, Proton, Posteo, and all the others are independent networks, but they can communicate with each other (unlike Facebook, Twitter, and others which require an account on each platform for communication).