Since they self-proclaim themselves the 'industry leader' we use ZipYourFlyer in this comparison. Both of us offer a 10% open rate guarantee so you get more guaranteed opens with whoever has the larger list in your area. (And here's a couple dozen additional comparisons to consider.)
Our list is larger in 88 of these areas, our list is smaller in 2 of these areas. (The lists are about the same in 10 of these areas.)
'ZipYourFlyer.com' and its derivatives are a registered trademark of ZYF Marketing LLC, which is not affiliated with our service. Competitive comparison information on our website is presented in good faith and believed to be up-to-date and accurate; if you notice any errors please email our support address to let us know.