Email randomly going to trash

Hi Vicci Conway,

Welcome to Apple Support Communities. We understand that important emails are appearing in the Trash mailbox in the Mail app on your Mac. We'll be happy to help.

To help troubleshoot this behavior, we recommend to rebuild the mailbox. This may help resolve the issue you're experiencing with your emails. For the appropriate steps, please follow the steps outlined in this helpful article: Rebuild mailboxes in Mail on Mac

Please let us know if that helps.

Kind regards.

Vicci Conway,

Thanks for getting back to us and for attempting those steps. If you haven't tried yet, let's go ahead and restart your Mac in safe mode. This helps to verify your startup disk, delete some system caches and more. Here's an article with additional details and the proper steps to take: How to use safe mode on your Mac

Once you're in safe mode, please restart your Mac as normal and see if you continue to experience the same behavior.

We look forward to hearing back from you with an update.

Best regards.

Vicci Conway,

We appreciate your effort in attempting those steps. To help review this issue further, we recommend to contact Apple Support through this link here: Get Support

Have a wonderful rest of your day.

Take care.