when I read an email in one device, still apears as Unread in the others

Goodmorning All,

I have the same problem.

4 Stations (MacBook Pro, iPad, iPhone and iMac), and when I read an email in one of them, still apears as Unread in the others.

Some one have a solution how I can do to do not have to read them in all devices.

I will strongly appreciate help.

Regards from Brussels