Microsoft 365 vs Proton Mail

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

Top sites by authority

Microsoft 365 · Proton Mail · 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

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

United States 463,081

5,830

United Kingdom 167,042

2,125

Germany 135,802

1,938

Canada 108,907

1,752

India 102,571

1,985

Netherlands 97,414

1,445

Australia 93,854

1,202

France 89,127

1,914

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 Microsoft 365 sites · All Proton Mail sites