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 162 of these areas, our list is smaller in 12 of these areas. (The lists are about the same in 26 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.