Emails missing from Trash mailbox in Mail

Just found the solution in another thread (my thanks go out to Joe M21). Hover the mouse pointer over the Favorites line in the sidebar. A + sign will appear on the right. Click on it and an Add Favorite dialog will appear. The dropdown list has all of the "All" folders to place back in the sidebar. That's where the Trash & Junk folders are that contain my emails that were missing. Just add them back in Favorites.

After update took me awhile to clean up mail boxs, (eg. there were Micro Soft mailboxes / Folders with zero contents and I have never used Microsoft, so off to the trash they went). Also found, Under My Mac there are two Junk, two Trash one for iCloud the other for Yahoo. Then, Yahoo folders also had their own Trash and Bulk (same as Junk) and did iCloud. Pretty much rely on All Inboxes, then for finding Deleted emails or emails in Junk that shouldn't be there, well nothing seems easy. Having said all that since Big Sur update, Big Sur update freezes email with every attempt to send or input a contact name. Apples spinning beach ball of doom freezes sytstem.

This will seem to be a dumb question but I have to ask: did you open the sidebar in Mail? Common mistake, I know because I have mistaken “gone” for closed sidebar.

There are larger things to explore in Mail during Big Sur too much at once update.!

Is the sidebar opened? Junk and all the rest show up in he part below primary email boxes, where there is Cloud then Gmail, and all of my mailboxes are showing. What else can you describe what you see when you open your Mail ? The “On my Mac” sidebar section for trash is empty, and there is a message at the top of the thread “lost connection”. In Cloud and Gmail everything shows. I deleted a couple of messages to see where they went and it was into iCloud trash. Looks like Cloud is where most things are destined. I have NOT explored the new Touch Bar function for dragging down into the Touch Bar on my MacBook Pro 2019. I use it for name and address autofill. It is only because I am afraid not because to knowledge. Fear wins with OSBS for now.

I have the same problem since upgrading to Big Sur but my emails are missing from both Trash & Junk mailboxes. I sent in a bug report via the Mail Feedback section under Help.

My Junk email is now in iCloud. I do not know why but I am happy for it being moved to the cloud rather than driver storage. Just look a little lower in the sidebar and you will see.

My Junk email isn't in iCloud or anywhere else that I can find. Also, if I delete a message from my Inbox it doesn't show up in the Trash even though I have Mail preferences set to do that.