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, Internet & Telecom, Arts & Entertainment, Shopping and 52 other categories.
Rackspace MailGun is leading in Social Sciences, Science and Mobile Developers.
Pepipost is leading in most countries, including United States, India, Brazil, France and 41 other countries.
Rackspace MailGun is leading in Peru and Czech Republic.