The unread emails count badge remains after the email has been opened.

### What Happened?

Look, this operating system is the best Linux operating system I have ever used, and probably its the best I've used when it compares to Mac OS and Windows OS. It's fast, it's smooth, secure and most of all.....captivating! But, there seems to be a problem when it comes to the unread emails badge. After opening and reading the message, the badge count remains the same. That's irritating and has to fix. Elementary, come on. You were by far the best in your prime. Why now, slow down and having other OS's out do you. Step up your game! And you'll earn more donations. Think outside of the box. Not to mention, the lock screen is very slow on start ups, and even after taking it out of suspend.

Well.... the email app has come a long way and it's even much better than what it once was. It has improved majorly and I thank all of you contributors for that. Well done, keep up the good work!

### Steps to Reproduce

After reading all of the unread emails, the badge count remains the same and they only go away after I exit the app and reopened.

### Expected Behavior

The unread badge count should be reduced immediately after an email has been read.

### OS Version

7.x (Horus)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info

Dual-Core Intel® Core(TM) i3-7100U CPU @ 2.40GHz
Intel® HD Graphics 620