Apple iCloud Mail vs Outlook Web App
Head-to-head usage across the sites we track.
Top sites by authority
Apple iCloud Mail · Outlook Web App · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
126
0
Open Page Rank 8+
2,135
11
Open Page Rank 7+
9,283
29
Open Page Rank 6+
17,844
50
Open Page Rank 5+
30,151
68
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 · Outlook Web App · share of sites in each country using one or the other
United States
129,767
3,011
United Kingdom
50,050
1,538
Germany
46,068
1,446
India
42,601
1,731
Canada
36,709
1,313
France
29,018
1,326
Australia
26,471
732
Netherlands
23,412
1,098
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apple iCloud Mail | Outlook Web App |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 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.