Thanks for your replies Andrew and Doug. We've proposed both options as work-arounds (and I do love printboss and snagit), but ultimately the client doesn't think they should have to buy extra software to accomplish this. Given that some images are permitted, I don't think that expectation is totally unreasonable and wanted to pass on their request.

That said, I try and have reasonable expectations too and don't expect Softrak to change this tomorrow! The client has opted to export email addresses based on a gridview and do the mailing manually.