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, Shopping, Arts & Entertainment and 54 other categories.
Rackspace MailGun is leading in Mobile Developers and Financial Management.
Pepipost is leading in most countries, including United States, India, France, Brazil and 41 other countries.
Rackspace MailGun hasn't got a lead over Pepipost in any country.