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 44 other categories.
Rackspace MailGun is leading in Social Sciences, Science, Search Engine and Mobile Developers.
Pepipost is leading in most countries, including United States, India, Brazil, Spain and 34 other countries.
Rackspace MailGun is leading in Japan, Honduras and Finland.