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 513,561

6,185

United Kingdom 192,504

2,300

Germany 149,868

2,033

Canada 123,911

1,910

India 114,600

2,067

Netherlands 111,248

1,566

France 109,542

2,126

Australia 104,165

1,281

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 Microsoft 365 sites · All Proton Mail sites