Message requests
Strangers can write to you, but you decide whether to answer.
Last updated
How requests work
A first message from someone you have not connected with arrives as a request. Accept, delete or block it from inside the chat. Replying accepts it too.
Until you accept, they cannot see that you are typing or that you read it.
Being added to groups
Only people you have connected with can add you to a group.
Who can find you
People can find you by exact email or phone number. Search by username is off for new accounts; turn it on in Settings → Discovery.