Market Share by Top Websites

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

2 In terms of market share, ConvertKit is clearly lagging behind, losing to Postmark in all segments.

Websites Categories

1 Postmark has better usage coverage in more websites categories. Including Internet & Telecom, Business & Industry, Computer & Electronics, People & Society and 232 other categories.

2 ConvertKit is leading in Home Improvement and Guides & Reviews.


1 Postmark is leading in most countries, including United States, Mexico, United Kingdom, Canada and 190 other countries.

2 ConvertKit is leading in Sierra Leone and Haiti.