See various previous posts about problems with the Mail App that comes with Windows 10 / 11 :
https://whysun.com/computers-and-the-internet/windows-10-mail-app-problems-fixed/
https://whysun.com/computers-and-the-internet/windows-10-mail-app-problems/
https://whysun.com/computers-the-internet/windows-10-mail-app-problems-update/
https://whysun.com/computers-and-the-internet/windows-10-mail-app-problems-confirmation/
I am still having small but annoying issues with the Mail App.
The formatting problem, mentioned in previous posts, still randomly occurs. Emails are received with text one letter wide in a long descending column of single letters.
Also I have had a couple instances of other small problems so I decided to install the Outlook Mail program that is included with my Office 365 subscription.
Outlook is by far a better program. On the other hand, it is designed for business and is more than I need.
I wish that Outlook Express or Windows Live Mail were still available but they are not. Mozilla Thunderbird is an option, but it is more like Outlook than Windows Mail.
After using Windows Mail App for long time, it took a while to get used to Outlook.
I did discover something in setting up Outlook concerning the server addresses for emails attached to my domain. Before, I had to put in long specific server addresses. With both Outlook and the App this is no longer necessary and I was able to use the IMAP automatic set up.
After using Outlook for a couple of weeks, I find myself going back to the Mail App to quickly check my emails. This is mainly out of habit, but also because Outlook is a large all encompassing program and seems a bit slow compared to the Mail App.
On reflection, I think I will keep using the App but keep Outlook as a back up to check / use when the App has problems.