APSIS is leading in Top 10K Sites and Top 100K Sites.
dotMailer has better usage coverage in more websites categories. Including Shopping, Travel, Clothing, Health and 88 other categories.
APSIS is leading in Business & Industry, Science, Marketing & Advertising, Social Sciences and 49 other categories.
dotMailer is leading in most countries, including United Kingdom, United States, Australia, Canada and 48 other countries.
APSIS is leading in Sweden, Denmark, Norway, Finland and 20 other countries.