Mail spinning wheel

Is that account POP or IMAP?

In Mail's Window Menu, choose Connection Doctor, any red dots for status, if so what is the message?

Then click the Show Details button & Check again.

Also open Mail's Activity window, any clues there?

I can't speak in unequivocal terms here but if your e-mail account(s) is an IMAP account there should be no problem removing it and adding back because an IMAP account is in sync with the ESP hosting it.

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Spinning beach balls in Mail, I would do a command-alt-zero to bring up the activity window.

You may want to eventually force quit mail, I do sometimes too don't worry. After doing that though, launch mail and perhaps rebuild your mailboxes.

-Restart your mac.

-launch ONLY mail - Quit other apps while testing

-does the spinning beachball persist? give it a few minutes to see

-If it persists and you have the activity window it mail reveal something stuck in queue and that could be useful to know about.

Sorry if repeated some things that BDAqua mentioned (he's too good), I was just typing away and too lazy to edit now or too tired rather (late at night here)

report back please.

Hello Mattcs

I am really sorry but I must have misunderstood your original post. Although I provided some good answers, your issue is as you state:

I've had a spinning wheel at its "Inbox" and no new mail to it since May

Here I believe you are descibing what sort of looks like a spinning cogwheel. See the picture below…

Thank you for noting this as helpful for the two of us who lent a helping hand, it's good for the community but is the issue resolved yet?