Delete old contacts in email list

Hi chawk145,

Thank you for posting in the Apple Support Communities. I see you want to clear up some previously used contacts in the Mail app in macOS Catalina.

It sounds like you're referring to the Previous Recipients list. If that's correct, open Mail and click Window > Previous Recipients. Then, you should be able to use the "Remove From List" button to clear out any you want to delete.

I hope I've answered your question. Take care.

Hi chawk145,

Thanks for replying to let us know that worked for you. Have a good one.