Apple iCloud Mail vs Microsoft 365

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

Top sites by authority

Apple iCloud Mail · Microsoft 365 · 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

Apple iCloud Mail · Microsoft 365 · share of sites in each country using one or the other

United States 122,210

463,081

United Kingdom 43,864

167,042

Germany 41,637

135,802

Canada 33,110

108,907

India 39,000

102,571

Netherlands 20,791

97,414

Australia 24,281

93,854

France 24,224

89,127

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, Aug 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 Apple iCloud Mail sites · All Microsoft 365 sites