I am moving from pesky Optus pop3 (emails blocked by yahoo, hotmail & sometimes bigpond) to gmail.
I set up new account on outlook 2019 with pop3 but gave up after hours when every test email I tried to get/send failed.
I then tried imap which didn’t fail, but has 5 problems in Outlook:
#1) it isn't enough to send an email - I have to send/receive after every send
#2) the gmail receive for imap is slower progress bar than other 3 bars - see attached outlook10.jpg
#3) random synchronizing of random folders, slowing down Outlook - see outlook11.jpg (bottom right)
#4) on left, inbox and outbox is not indented, while draft, sent mail, trash & spam folders are indented - see outlook11.jpg (left side)
#5) someone I emailed from my gmail account received email about 10 minutes before it finally went to my gmail/imap "sent mail"

Attached Images

	outlook10.jpg (71.3 KB, 5 views)
	outlook11.jpg (151.2 KB, 5 views)

#6. Sometimes for no apparent reason, when a folder is being "Synchronized" it's contents are totally deleted, but not the name of the folder.
Several times I have had to File/Import from my old backup PST to retrieve the folder.
This is a very serious bug.

One folder's contents is repeatedly deleted when synchronsizing.
ie it starts to sync then sync will finish, and boom, all the files disappear.
So I import it again, and it sync's then deleted again. Time and again.
This is a very serious bug.

I may have found a partial solution to the very long sync problems.
One google search said right-click on the gmail account, select IMAP folder, Query, then it showed a huge list of folders, mainly subfolders of Trash folder.
When I tried to unsubscribe some of these useless Trash subfolders, and then clicked Apply and ok, nothing happened apart from a beep. I clicked X and nothing. But when I hit ESC key, window disappeared, and top 1/3 of Outlook went blank, and after 1- seconds Outlook unloaded. When I went back in, IMAP folder was no in the options any more. I tried repair and it didn't fix/restore missing IMPA folder option.
But I have notice sync is a little quicker.
I would love to get IMAP folder / Query working again, so I can unsubscribe many more Trash subfolders.
Any help appreciated?