Klaviyo vs MailChimp

Head-to-head usage across the sites we track.

Top sites by authority

Klaviyo · MailChimp · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

Klaviyo · MailChimp · share of sites in each country using one or the other

United States 103,547

161,030

United Kingdom 40,783

74,844

Canada 33,265

48,970

India 22,437

47,917

Australia 30,331

37,236

Germany 26,133

36,354

France 23,908

37,876

Italy 15,610

37,051

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Klaviyo sites · All MailChimp sites