Windows Mail App does not work with Gmail accounts

This works support showed it to me, so you want to click on ur pfp on gmail or google or whatever and click manage your google account, click on security and click 2 step verification, scroll all the way down to app passwords, make one called whatever you want to call it it doesnt matter, it will give you a password, copy and paste that password into the password section when you click other accounts. it should work, it worked for me

I have tried so many things and nothing worked.  I suggest that you download MOZILLA THUNDERBIRD.  It works, its free and you can integrate of your email accounts to one place. 
Thunderbird — Make Email Easier. — Thunderbird
PhilC43 

PhilC43 

The solution that I have found is simple. Just add a new app password in Google Account Security settings. This new app password you can use instead of gmail password to authenticate with "less secure apps" like Mail from Microsoft.

Enjoy!

I have similar experience. F.e. GMail messages which are unread and AT FIRST appear in Mail App's "unread" filter in "All Mail" folder can be made to utterly disappear simply by moving them from one folder to another within the Mail App. After the move, they are not anywhere in the Mail App, even though the changes will be reflected correctly in GMail via browser interface. It's like the messages get "old" and lose their "hotness" -- changes to message attributes (label, folder, read/unread, flag) are not synched to them by Mail App unless the message is ARRIVING at the time of the change to the attribute. So, absent the message being identical to its arrival state, it is a non-message, and the Mail App no longer sees it.

Personally, I like to keep incoming mail messages in my In-Box until I have acted upon them. So, I'll generally have four or five messages sitting in the In-Box, unread, for a while. With any other mail app, this is fine; they sit there. With Microsoft Mail App, they disappear. Next time I log in, they aren't seen by the Mail App any more, and I don't know what or where they are. I left them there as a reminder, so I wouldn't have to remember them, I don't know what their contents are, and therefore I cannot search for them by content. I had a job to do; Microsoft hid it from me permanently, and quite effectively; now it won't get done.

There are plenty of other symptoms. The culprit seems to be, that the "folder" concept (used by most conceivably normal email systems) versus the "label" concept (used idiotically by GMail alone for very little good reason except that they like to push us around by demanding we change our thinking habits) are contradictory in some manner or other. Most IMAP setups should be able to handle GMail's "label" concept but evidently Microsoft Mail App cannot do it, and instead of showing messages that it knows are there, it hides them.

This is un-tenable. Microsoft Mail App ought to handle the simplest of GMail messages, but it cannot. I ought to be able to replicate my GMail folders either on a web browser or, via IMAP, in the Mail App, but I cannot, because Microsoft cannot handle GMail's "label" concept (or, differently put, because GMail's "label" concept conflicts with most email systems' assumptions about labeling and foldering).

PhilC43 

Hi, I found the solution, 

Open the google account setting,  go to the Security tab then Sign to Google Account, then go to Security then App passwords, enter your password, go to select app, choose Mail, then choose Select device( Windows Computer ) and save the new generated password, Go to mail app in Windows 10 and  in Microsoft mail add your account with the new given password ... finished

PhilC43 

I know this sounds real easy but it worked for me.  I noticed when it was putting my details of the gmail account I wanted to link to the Mail App that it was just putting the name, and missing the @gmail.com off the rest of the address.  I know it shouldn't matter, but when I eventually typed the whole address in manually, then it connected first time and is working fine again.

PhilC43 I like to think that these companies are beyond petty back-stabbing, but I can't help but this this is retaliation for what Google did to SwiftKey's speech-to-text. I wouldn't want to go down that rabbit hole too far, but I can't help but chuckle a bit..... I've spent the last few months uninstalling the updates to the "Google" App. When it updates, SwiftKey loses its mind. Speech to text gets almost unusable, and the dropdown function when typing that lets you tap a word and select from multiple other options.... stops working completely. 

It started early last year, right when Covid was ramping up. I got fed up and changed to Gboard but occasionally if I had some spare time and remembered, I would research it here and there. When I was troubleshooting, I reviewed dozens of threads at the SwiftKey site where people were griping at how lousy MS is for letting SwiftKey get so bad. Many, like me, have used it since the early to mid 20teens. It was awesome, then one day it wasn't. It works. It predicts, But does so horribly. 

And there are plenty of threads out there that identify the cause. If you roll back the "updates" to the Google app (not Chrome, Now, Gboard, etc... just "Google", the problem goes away and SwiftKey is again one of the best keyboards out there. But why does it cause that problem? And why does it not do the same to other keyboards? 

The MS staff HAD to be aware of the cause and how easy it is to resolve...You just roll back the app's updates. But they never say so. Which is why I didn't use it for nearly a year. But now that I have the solution I have my trusty keyboard back.... but they still don't mention it in the threads where people even now are still complaining. very odd......

Then I stumble onto this and can't help but think that the problems here have the same feeling of annoyance that SwiftKey users were getting. Coincidence?  

PhilC43 

You can add Gmail accounts to Windows 10 Mail using IMAP instead of Google.

The Google link returns an error so adding Gmail accounts as IMAP works but you need to ENABLE IMAP in your GMAIL SETTINGS. 

IMAP must be enabled in Gmail before you can connect your account.

1. In a browser, go to Gmail.com

2. Select> Settings

3. Select the Forwarding and POP/IMAP tab.

4. Under IMAP Access, select Enable IMAP.

5. Select Save Changes.

Google removed the security settings for less secure apps so now this is all you have to do in order to add Gmail accounts to Windows 10 Mail when you get errors using the old method.

For those who are facing this problem, make sure update Windows and open Microsoft Store and make sure you check for update and see if Mail app is fully updated.

Then try open it and if problem persist, then open start and search for feedback and open Feedback Hub app and report this issue. If the issue already exist in Feedback Hub, then upvote it.

Also, take a look at:

https://support.microsoft.com/en-us/account-billing/fix-problems-with-apps-from-microsoft-store-93ed0bcf-9c12-3df6-6dda-92ec5d0415ac