Outlook Not Sending Emails but Receiving - How to Fix?

Mar 07, 2026
By Mathew Jones

Do you notice that your Outlook Mail is receiving new messages, but you are not able to send emails? It could be due to a large email stuck in the outbox, or interference from antivirus software or a firewall. Sometimes this problem occurs due to a corrupted profile or to “Work Offline” mode being enabled.

These are a few challenges you may face when troubleshooting the “Outlook not sending emails but receiving” issue:

Stuck outbox items
Authentication failures
Faulty COM add-ins

Tags: Outlook Not Sending Emails but Receiving

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