We have an issue where one of our Jira service desk customers is not receiving emails that should be sent out of Jira Service Desk.
The most recent change we made was to remove the customers account and re-add it.
The customer did not receive the invite when his account was added again. I also added the customer as a participant on a request and made a comment on the request. There was no comment email delivered.
We cannot figure out what is different with this user than any other user we have setup in the past.