How to Fix Outlook Email Stuck in Outbox?

Dec 05, 2025
By Drake shawn

A slow network can disrupt Outlook's ability to send your message. That’s one of the reasons it stays in the Outbox. Oversized attachments, which take longer to upload, may prevent the message from sending, too. Damaged files or profiles can also be the culprits for your emails not leaving the Outbox.

Be wary of these potential problems that may occur while resolving the “Outlook email stuck in Outbox” issue:

Network disruptions
Wrong account settings
Add-ins causing conflicts

Tags: Outlook Email Stuck in Outbox

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