Must know
- Text only. No photos, files or attachments on any channel.
- Very long messages are refused with “Message too long”, and Web & SMS messages are capped at 1,600 characters. Nothing warns you while you type.
- Too long is refused, not trimmed. Retry sends the same text, so copy it out of the faded bubble, shorten it and send it as a new message.
1
Find the faded bubble
The box clears as soon as you send. A refused message stays in the thread as a faded bubble with a small red warning triangle and a red Retry link. On a computer, hover the triangle to see Failed to send. Retry sends the same words, so it fails again.
2
Copy, shorten, send
Copy the text out of the bubble, paste it into the message box and cut it down, or split it into two messages. On a computer, Shift+Enter starts a new line and Enter sends.