RE: [exim] Monitoring sent emails of a user

>> and it is working okay. But I want to remove the header line
>> "Return-Receipt-To: ..." only in this "unseen delivery" filter (if
>> you call
>
> Section 42.6 of the Exim spec tells you how to do that.

Yes but I only want to do it to the copied mail like this:

if ($sender_address MATCHES newuser@???) then
    unseen deliver watcher@??? headers remove "Return-Receipt-To"
endif