Path: Me - General Settings - Privacy - Blocklist
Add to blocklist: open the contact's chat details and enable Block.
Effect after blocking: the blocked contact cannot send messages to you.
Manage blocklist: go to Me > Privacy Settings > Blocklist.
Learn how to add a contact to blocklist from chat details and where to manage blocklist in Privacy Settings.
Path: Me - General Settings - Privacy - Blocklist
Add to blocklist: open the contact's chat details and enable Block.
Effect after blocking: the blocked contact cannot send messages to you.
Manage blocklist: go to Me > Privacy Settings > Blocklist.