What are the customization options for Messenger service notifications?
How does Messenger service integrate with other apps?
What are the privacy features available on Messenger service?
How can you start a chat on Messenger service?
What is the primary function of Messenger service?
Can I use Messenger without a Facebook account?
How do I send photos or videos through Messenger?
What are some privacy settings available in Messenger?
How can I delete a conversation in Messenger?
What features does the Messenger service offer?
