Email User(s) to Notify field use

Email User(s) to Notify field use

Hello all;  The  Email User(s) to Notify field in my implementation of SDP 8 does not appear to work.  Email to and from SDP works in every other way.  I'd like to clarify how this field is meant to be used.  i'm pretty sure the idea is that any email address you put in that field will have a message sent to it when the ticket is closed.  It may send a message at other times too, but on incident closure is what I'm most interested in.  

Am I correct?  what other events will trigger an email to to addresses in the  Email User(s) to Notify field?

Thanks much!

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