Hello @Idan Gazit I tried this in graph explorer and got the same result. It doesn't currently look like there is any way to update an extension when the message it is created on is deleted and moved to the recoverableitemsdeletions
folder. From mailFolders resource documentation, we see that recoverableitemsdeletions
folder is not visible in any Outlook email client, but end users can interact with it through the Recover Deleted Items from Server feature in Outlook or Outlook on the web.
I hope this helps,
Diana.