Can Messenger be used without a Facebook account?
Is Messenger secure for private conversations?
How can you send messages on Messenger?
What features does Messenger offer?
What is Messenger and how does it work?
What privacy settings are available on Messenger?
How do I block someone on Messenger?
Is it possible to make video calls on Messenger?
How can I send a message using Messenger?
What are the main features of Messenger service?
