-Hi, my name is Claudeir, I'm happy to help you!
If it's a problem with the Windows Mail app, let's solve it:
Settings > apps > apps & features > find the Mail & Calendar app in the list > click the three dots > advanced options > Repair. If it still doesn't work, click Restore.
If the problem persists, I suggest that you test in another email account to make sure that the problem is not with your account.
-Feel free to leave your opinion, marking as answered if the answer helped, or leaving more details so that we can continue the service, this is very important to us.
Graciously,
Claudeir