Opening an email on my iPhone doesn't show it as read on webmail

[imaccat]

Recently the following issue has started to happen. 

If I open an email on my iPhone 14 (running IOS 18.1, but was also happening on IOS 18), it doesn't ever shown as opened on web mail or in mail on my MacBook. If I open an email on my MacBook, it will shown as having been opened on web mail, but not opened on my iPhone.

I've tried deleting the email account on the iPhone and setting it up again, I've checked the Fetch setting (every 15 mins), but it still doesn't show the emails as opened regardless of the time lapse. All emails are delivered to the iPhone, so that isn't a problem.

Can anybody offer any advice please, as it is really annoying!

Thanks

[David500]

I assume you are referring to BT email?

What mail app are you using on the iPhone?

I use the Apple mail app and when I read, move or delete on the app they show correctly on BT webmail.

[imaccat]

Yes it is BT mail and I’m using the standard Apple email app

[imaccat · Accepted solution]

I have removed the BT Email from the iPhone mail account (again) and re-added it, which appears to have worked this time. Hopefully it remains that way.