Use These Free Double opt-In Submitters For A Marketing Campaign.
You'll get an HTML file of easy to use FREE double opt-in email submitters. No questions asked. I uploaded the file as a zip file... You can unzip it, and use the submitters as you choose.
I found submitters for every kind of marketing campaign. I searched the whole internet, and found them. I'll update this list automagically. You can request an update if you choose.