Mailgun may be a good service–very much what I was looking for as a way to send emails through someone who will keep up with making the emails work!
http://documentation.mailgun.net/Documentation/FAQs#GMail_says_.22Signed_by_mailgun.us.22_about_messages_I_send
Sender Score: https://www.senderscore.org
Sender Base: http://www.senderbase.com/senderbase_queries/main
AOL: http://postmaster.aol.com/Postmaster.Reputation.php
–also look at this for a way to get on the whitelist
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