OWA should respect message expiration rules
When an inbound rule causes content expiration (for example, message expires after 3 days), then the messages is expired and no longer accessible in Outlook Desktop for Mac and Windows, BUT is still plainly visible in OWA with all content. OWA even shows a message saying "This message will expire on: <date in the past>" and still shows the full message and attachments. A huge gap in security, not sure how this even meets an MVP for this capability.
Paul Davey commented
This makes a m,ockery of having any automatic expiry of messages.
The feature is worse than meaningless becase it engenders a false expecation.
According to Microsoft - this functionality is broken "by design" - those are their words. https://blog.ambor.com/2019/04/azure-information-protection-broken-by.html