Where is my Bin in Mail App?

Find and add your Favourite Mail Folders including Bin ( Trash ) of Mail

refer link below

Use favorite mailboxes in Mail on Mac

Baring the above not work

Go www.icloud.com then Mail

What is appearing in iCloud Mail

As iCloud uses IMAP Protocol -what is on iCloud Mail would be reflected back into Mail Application of the computer

No idea why this happened, but the fix is easy.

Just click that menu and reselect "Deleted Messages", which is the default.

Bomiboll wrote:

There is no "reselect Deleted Messages"

I don't understand. It's there in your screenshot:

Bin is used when using the British ( I think ) language layout and Trash is N. American Language layout

Bomiboll wrote:

Yes. Bin is there and works as expected i e on deleting a message it goes straight to the Bin

So extent this reported Behaviours as working as Designed and Expected - right ?

So let us go back to Use favorite mailboxes in Mail on Mac

What happens when you click on the "Bin Mailbox" drop down menu?

Wondering if OP is looking for the " bin " >> On My Mac = Local Bin ?

But omits to define such

So what happened while in www.icloud.com >> Mail ?

Is the requested " Bin " there ?

Then to be fair and reasonable - suggest you make the answer your feel answered your question and solved your question , accordingly .