Market Share by Top Websites

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

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

Websites Categories

1 Klaviyo has better usage coverage in more websites categories. Including Lifestyle, Food & Drink, Sports, Home & Garden and 19 other categories.

2 Customer.io is leading in Jobs & Career.

Geography

1 Klaviyo is leading in most countries, including United States, United Kingdom, Australia, Canada and 156 other countries.

2 Customer.io is leading in Syrian Arab Republic.