Miscellaneous topics that do not fit into specific categories.
If the messages are stuck in Outbox, use this path:
- Go to Send/Receive and select Work Offline.
- Open Outbox in the navigation pane.
- For each of the three messages, either:
- Delete it, or
- Drag it to Drafts, open it, and remove any large attachment.
- If Outlook says it is still trying to transmit the message, close Outlook, reopen it, and repeat the step above.
- Go back to Send/Receive and clear Work Offline to return online.
- If the messages should send automatically but do not, check whether Send immediately when connected is enabled.
A common reason for messages staying in Outbox is a large attachment. If the account is Outlook.com, attachments larger than 25 MB must be reduced or replaced with a OneDrive link.
If using Outlook on Mac, the Outbox only appears when messages are waiting to be sent. If mail continues to sit there, check Tools and switch to Online if that option is available. In New Outlook for Mac, that Online/Offline toggle is not available.
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