new mailbox: All Trash
Mac OS Big Sur: 11.2.3. In Mail I have All Inboxes, All Sent and All Drafts. Can I also have All Trash? Thank you for your help.
MacBook Air 13″, macOS 11.2
Question marked as
Yes. I did not do it before because I was away from my mac and I was not completely sure about the process.
Move your cursor near the word Favorites in the Sidebar, and you will see a circled + sign.
Click it to add a new favorite. Among your choices will be "All Trashes".