The customer has raised a request and it is recorded in the JSM,
But when replied from the JSM with the reply to customer feature, The customers did not receive any emails,
when investigated, found that they hadn't gotten any email even regarding a ticket being logged.
Checked all the customer notification settings everything is enabled with the customer and requestors selected to get the emails. But not receiving emails in their inbox or spam how can I solve this problem as my customers are not able to receive any emails for the tickets they raise?