Hi there, I think you may have a duplicate question here
Well could be, it was confusing submitting a question and then being asked to submit a question. Do we have an answer?
There are ways to prevent being classified as spam.
1. Make sure you never include fake addresses
2. Set up domain keys http://en.m.wikipedia.org/wiki/DKIM
3. Set up SPF http://en.m.wikipedia.org/wiki/Sender_Policy_Framework
4. Put an unsubscribe link in your emails