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 108 other categories.
CampaignMonitor is leading in Business & Industry, Shopping, Travel, Food & Drink and 93 other categories.
CampaignMonitor is leading in most countries, including Great Britain, Australia, Canada, Germany and 104 other countries.
VerticalResponse is leading in United States, India, Italy, Russia and 49 other countries.