Outlook Web App vs SquirrelMail
Head-to-head usage across the sites we track.
Top sites by authority
Outlook Web App · SquirrelMail · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 8+
11
1
Open Page Rank 7+
29
4
Open Page Rank 6+
50
5
Open Page Rank 5+
68
6
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Outlook Web App · SquirrelMail · share of sites in each country using one or the other
United States
3,011
36
India
1,731
44
United Kingdom
1,538
20
Germany
1,446
31
France
1,326
23
Canada
1,313
22
Spain
1,125
17
Netherlands
1,098
19
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Outlook Web App | SquirrelMail |
|---|---|---|
| LCP | 1.7 s | 1.4 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 600 ms |
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.