[rt-users] 3 emails sent by correspondance by user

[L B]

Hello,

 I have this case :
 - a (privilieged) user sends a request to RT for a task he has to do.
 - people managing tickets assign it to him, and put it in a queue he
is admincc for

So this user is requestor, owner, and admincc : he gets 3 emails on
each correspondance. Is it possible to grep|sort|uniq email addresses
before sending notifications to avoid this behaviour ?

Thanks!
-- 
L.B.