Pepipost is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Pepipost has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Internet & Telecom, Career & Education and 37 other categories.
Rackspace MailGun is leading in Mobile Developers, Social Sciences, Science and Search Engine.
Pepipost is leading in most countries, including India, United States, France, Brazil and 30 other countries.
Rackspace MailGun is leading in Japan, Morocco, Belgium, Pakistan and one other country.