Hi, @Alan-W
I wanted to achieve the same.
To automatically respond to a particular sender, and to give the sender a reason why I am rejecting his emails.
I similarly thought, that that command 'Reject with reason' might be the one to use.
However there is no way of knowing, as there appears to be no documentation.
In that command, there is just one empty text box. Would that be, where I, as the rejector, types the reason for the rejection?
Bill
