Amazon SES vs Mailman
Head-to-head usage across the sites we track.
Top sites by authority
Amazon SES · Mailman · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
68
2
Open Page Rank 8+
1,210
26
Open Page Rank 7+
5,141
50
Open Page Rank 6+
9,940
54
Open Page Rank 5+
16,692
59
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Amazon SES · Mailman · share of sites in each country using one or the other
United States
67,827
96
United Kingdom
30,161
60
India
29,401
86
Canada
23,344
49
Germany
23,317
65
Brazil
21,901
63
France
19,422
57
Australia
18,824
44
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Amazon SES | Mailman |
|---|---|---|
| LCP | 1.8 s | 1.5 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 ms |
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.