Cancel a call or an email connector?

Hi there,

I have a iterative call to a process that sends emails. based on data in variables, how do I either cancel the instance of iteration or how do I say do not send the email msg?

For example my iterator says, send send send donotsend send send.

Yes I could have code that says if donotsend do not add to iterator, but I want to know if there is a "break" in the call step or a "cancel" switch...for the connector

Thanks and regards, Seán