How do I control who can message me?

Open Settings, then Privacy. Choose who can send you messages, and whether people you don't know can send message requests.

Phone app

  1. Tap your profile picture at the top of Home, or swipe in from the left edge, to open the menu. Tap Settings.
  2. Tap Privacy.
  3. Under Who can reach you, set Messages, and turn Message requests on or off.

The same section has Who can add me to groups, Tags, Comments and Read receipts.

Desktop app, Website

  1. Open Settings and click Privacy.
  2. Under Communication, set Receive messages and Message requests.