unable to send and receive emails

For intermittent send/receive problems that clear after restarting Outlook, use this order:

1. Check Outlook’s connection state.
   • In Outlook, look at the status bar at the bottom.
   • If it shows Disconnected, Working Offline, or Trying to connect..., Outlook is not reaching the mail server.
   • Go to Send/Receive and select Work Offline to switch back online if needed, then try Send/Receive again.
2. Check internet connectivity.
   • Open a browser and confirm normal web access.
   • If the connection is unstable, Outlook can stop sending and receiving until the app is restarted.
3. If the issue started after a password change, update the saved password.
   • In new Outlook, select the email account name.
   • When prompted, select Continue and sign in with the new password.
   • If the provider requires an app password, generate it with the email provider and use that in Outlook.
4. Check for a stuck large message.
   • Open Outbox.
   • Start with the oldest unsent message.
   • If it has a large attachment, remove it and resend with a smaller file or a link instead.
   • For Outlook.com, attachments larger than 25 MB cannot be sent.
5. Test Outlook without add-ins.
   • Press the Windows key, type outlook.exe /safe, and press Enter.
   • If sending and receiving works in safe mode, an add-in may be blocking Outlook.
6. Repair Outlook.
   • Repairing the Office application can resolve send/receive issues.
   • This may take up to about 30 minutes.
7. Repair the Outlook profile.
   • If restarting the app temporarily fixes the issue, the Outlook profile may be damaged.
   • Repair the profile, or create a new one if needed.
8. If using Outlook.com, also check mailbox/storage limits.
   • If Microsoft cloud storage is full, email cannot be sent or received.
   • Messages sent during that time can bounce back and are unrecoverable.

If the problem happens only on the laptop while mail continues to work on the phone, that points more to the Outlook app, profile, add-ins, or local connectivity on the laptop rather than the mailbox itself.

References:

• I can't send or receive messages in Outlook
• Can't send or receive email in Outlook.com