Recently it came to our attention that the ads for some (under 0.5%) of our clients were being refused on the recipient's end. I'm going to list a few of them below and near the bottom of the page I'm going to upload a few screenshots of the ones I was able to get, I could have got a few more but the ads fly out of here pretty fast. We will add more if and when we find more. If you have an idea of what may be causing this then go to Support Solutions and let us know and we'll check it out.
We think it is likely one of these 3 things:
1. The sites don't like your ad tracker. Did you check the Spam Confidence Level? You need to do that before you sign up and attach it to your affiliate link. If a domain does a lot of spamming then your ads are thrown into a Junk folder or deleted. The lower the number the better.
2. You may unknowingly be using "spam words" those will get your mail to the trash fast. I've looked for a list for you, I looked at several and this site was best, check out this SPAM Word Blog
3. The recipient's free email provider is blocking you, GMail does that a lot. I don't have GMail but I'm told they have a folder called "Promotions" and they dump your mail in there without telling you.
Have a great day,