Office 365 Desktop App Share Sheet Broken?

Hi All,

One feature our team uses frequently in desktop apps (linked to O365/Sharepoint/OneDrive) is the in-app 'Share Sheet' in order to pass links to documents.

As of today emails generated by these features are not arriving at their destination. As our O365 admin, I have checked exchange and can't see these emails inbound before they reach the mailboxes in question.

Is anyone else experiencing issues?

Thanks

Ian