Klaviyo vs MailChimp

Klaviyo runs on 55,004 ranked sites (0.6%); MailChimp on 26,050 (0.3%).

By rank tier
TierKlaviyoShareMailChimpShare
Top 1,0000<0.1%0<0.1%
Top 10,00070.1%120.1%
Top 100,0002430.2%3040.3%
Top 1,000,0002,1270.2%2,2840.2%
All ranked55,0040.6%26,0500.3%