Send a message on Facebook
Who can I send messages to on Facebook?
How messages on Facebook work
How do I know if a friend has seen a message I sent on Facebook?
Add a file to your message on Facebook
Send a photo, emoji or sticker to someone on Facebook
How do I delete sticker packs for my Facebook messages?
Can I retrieve deleted messages on Facebook?
How many people can I message at once on Facebook?
How do I chat with more than one friend at once on Facebook?
Leave a group chat on Facebook
Messaging Pages, Events and Groups
How do I send a message to my Facebook event guest list?
Send a private message to a Facebook Page