can i add emails that my wife sent me when i was overseas before i came here as proofs along with I751?? thanks a lot guys.

Absolutely, you can add whatever you want. When we did proof for the original conditional residency we had a stack of emails as thick as a small phone book! We got approved without question

Yes, anything that can proof your relationship with your wife. Good Luck.

yeah it would be ok to stick in a few emails.. but remember it isn't about the quantity of evidence you have but about the quality..

I really think they are more concerned with the co mingling of your finances etc..

I agree with *Marilyn*. The I-751 is all about proving to the USCIS that you have an ongoing financial relationship. They want to see joint accounts, joint debts and obligations, joint tax returns, and anything else that shows commitment between the two of you. If you are providing email letters, then I would assume you spend a lot of time away from home because of your job. Otherwise, it's all about making them think and being able to prove you are a married couple.