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 87 other categories.
Rackspace MailGun is leading in Sports.
Pepipost is leading in most countries, including United States, India, Viet Nam, Brazil and 67 other countries.
Rackspace MailGun is leading in Ireland and Austria.