What options are available for customizing notifications in Messenger?
How do I add a new contact on Messenger?
What features distinguish Messenger from other messaging apps?
How can I send a message using Messenger?
What is the primary function of Messenger service?
What are the common issues with the Messenger service?
How do you set up a Messenger account?
What are the privacy features of the Messenger service?
How does the Messenger service integrate with other apps?
What is the history of the Messenger service?
