Messages

Send messages to non-contacts
Delete the cache and cookies from my browser
How do I send a message to several people at the same time?
How do I delete a message?
How do I know if my message has been read?
Create or leave a group chat
Is it possible to search for specific messages?
Displaying just unread messages
Is there a limit to the number of messages I can send?
I cannot access my XING messages (macOS / Safari)
How can I turn off read receipts for my messages?
Report unwanted messages or contact requests as spam
End-to-end encryption of XING messages
Netiquette
Message previews in e-mail notifications