Mail App - Not processing or showing new received emails

Thanks for your reply, unfortunately there is nothing in the settings to address this problem.

I'll try to explain this issue in a better way:

1- I receive new email (on the server, mostly Gmail).

2- The Mail App is aware of this, so it must have "fetched" or queried the server somehow.

3- Mail App shows notification (badge) with number of new emails received.

4- I open the Mail App, the new emails usually don't show (I think sometimes they do, but that's almost never the case)

5- To be able to see those new emails, I have to do one of these:

a) Force mail check again

b) Close and reopen mail app (that usually just forces a new mail check, I think)

c) Select option to show only unread messages, they show up after that.

In the settings we can control how and when to fetch new mail, to show or not show notifications and which ones... the usual stuff, but that all seems to be working fine. What's not working is that the badge notification doesn't match the actual content of the mail account.

It looks like the notification just let's you know there is new email to be received... not that it was actually already received and ready to be seen/read when I open the mail app.

For me this started happening with IOS13 on iPhone 8, problem persists in IOS14 with iPhone 11 Pro.

My friends with iPhone 11 have the same problem, at least the few that use Apple Mail App... most people use other apps for mail it seems, but I really like the simplicity of Apple Mail.

Added and removed everything, restored from backup, new install, different phone generations... nothing works to fix this issue, since IOS13. It's broken...

Thanks for trying to help.