Mark message as read when moved to Trash

Hi all,

When I send a message to trash, without previously reading it (just with the subject is enough to say I do not want to read it), it remains as "unread". Then, clients (I am using Kmail) report there are unread message, when all of them are in Trash. The question, then is: Is there any way to automatically mark a message as read, when that message is moved to Trash?

Thank you!
Felix