If you compose a message and it doesn't send, you'll see an alert on screen.
This usually happens when your data connection isn't working properly, and is quickly resolved when you rejoin the network.
Guild doesn't have an offline mode to store unsent messages, but if you do compose a message that isn't sent, the message will remain in that screen, even if you navigate to a different group or direct message. You can return to resent it when your connection is restored.
If you experience an error with sending and your data connection is working, please contact us letting us know what device you're using and any additional error messages you are receiving and we'll investigate.
Example of an unsent message