CampaignMonitor is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
VerticalResponse has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Religion & Spirituality, Health and 109 other categories.
CampaignMonitor is leading in Business & Industry, Shopping, Travel, Food & Drink and 96 other categories.
CampaignMonitor is leading in most countries, including United Kingdom, Australia, Canada, Germany and 98 other countries.
VerticalResponse is leading in United States, India, Philippines, Mexico and 40 other countries.