Apple Watch receiving double notifications from Mail
I've just bought an Apple Watch Series 5 (running OS 6.2.1) and linked to my iPhone XR (13.4.1).
My work email is a Microsoft Exchange account, and works perfectly on my iPhone. However, on the Watch, I receive two notifications for each email. One of them is dated "now" and the other has a time stamp of the current time or one minute ago. This doesn't happen with every single email, but it happens with most of them. It's hard to work out why it happens to some and not others.
This is a problem which has been identified before, but I have tried all the fixes online, and nothing has worked.
Any ideas? Mail is the only app delivering double notifications. And to be clear: on my iPhone, I only receive one notification per email.
Apple Watch