easy going sponsors /affiliate programs

i want to do sms marketing
and most of sponsors or affiliate program will ask you to prove the opt-in source
are there any good easy going sponsors that don't insist on your type of data or way of sending offers ?

Most affiliate marketing programs want to avoid spamming and that's the reason why they insist on some type of evidence that you can legitimately raise good traffic for them. The problem is that if you just approve affiliates anyhow, some of them will end up using covert techniques that can even get one's domain or business black listed.

That said, you can try ReferralCandy, they were quite flexible last I checked.