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 446,169

6,073

United Kingdom 167,441

2,294

Germany 133,953

2,065

Canada 106,122

1,866

Netherlands 98,204

1,535

India 96,044

2,023

France 91,083

2,058

Australia 91,009

1,236

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, Oct 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