On Correspond Action mandatory CF

Hi list,
I need that a supervisor can validate every correspondence between ticket
owner and requestor. Can I “block” an outgoing email if a CF has no value
assigned? Is there a better way to do that validation? Can I modificate
"Approvals" behavior to do that?
Thanks in advance.
Andres.

Please, I really need help with this. Can anybody help me? Did I make the
wrong question?
I would appreciate any help.
Thanks!!2009/12/8 andschais@gmail.com andschais@gmail.com

Hi list, I need that a supervisor can validate every correspondence between
ticket owner and requestor. Can I “block” an outgoing email if a CF has no
value assigned? Is there a better way to do that validation? Can I
modificate “Approvals” behavior to do that?
Thanks in advance.
Andres.