Mail delivery subsystem

Hi,
I have this issue on my IMAP Gmail account in EM.
I got 2 messages of MAIL DELIVERY SUBSYSTEM related to delivery failure. I canceled them and they disappeared on GMAIL online account but they do not disappear in Em Client. When I double click on them the subpage in empty.

What can I do to eliminate them definitely?
Thank you

I canceled them and they disappeared on GMAIL online account but they do not disappear in Em Client.

As you have a Gmail IMAP account, either “Right click” on the Gmail “All Mail” folder and click “Properties” at the bottom. Then click the “Repair” tab at the top, and finally click “Repair”.

The repair can take time as it clears the local mail cache in eM Client so be patient. Your mail will then take a little time to reread again when you click on your email as a result.

Or

Failing that “remove your Gmail IMAP account” in eM Client and then “re-add your Gmail account” via “Menu / Accounts”.

Note:- Before doing anything “backup eM Client” via “Menu / Backup”.