Gmail set up

[king1]

now if i recall correctly mailwasher just acts as a separate email client connecting via imap to the mail server, prior to you actually opening your normal email client that then collects the modified mail from the same server.

So if everything is working correctly in Mailwasher one might assume it is simply an issue with thunderbird.

From a testing point of view I would be trying to setup another instance of thunderbird on another PC or another user profile on your pc to confirm if it can be setup correctly. Trying in another mail app would also be useful from a what works, what doesn't work perspective.

couple of side notes...
There is a version 138 of TB in the standard release channel as well that might be worth an update to.

I just tried a setup of my gmail account in MW and all went as expected but note on the OAUTH signin screen google now has a second tick box to select to approve ongoing authority to access the account, otherwise it (authority to access the google account) is revoked after 6 months. first time i've seen that...