Attachments
Messenger makes it easy to 'attach' a file or web link to any message that you send.
When you insert a file, your file is uploaded to our servers and made available to the message recipient as a 'short link' that is added to the message.
You can also insert a long link from any website you like, and we will convert to a 'short link' in the message body.
Note
If the ‘short link’ text forces the message to exceed your message length limits, we’ll warn you immediately.