Market Share by Top Websites

1 Customer.io is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, ExpertSender is clearly lagging behind, losing to Customer.io in all segments.

Websites Categories

1 Customer.io has better usage coverage in more websites categories. Including Computers Electronics & Technology, Jobs & Career, Business & Consumer Services, Finance and 16 other categories.

2 ExpertSender is leading in Health, E-commerce & Shopping, Home & Garden and Vehicles.

Geography

1 Customer.io is leading in most countries, including United States, United Kingdom, Canada, India and 100 other countries.

2 ExpertSender is leading in France, Russia, Poland, Belgium and 14 other countries.