Sailthru vs Sendinblue
Head-to-head usage across the sites we track.
Top sites by authority
Sailthru · Sendinblue · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
12
14
Open Page Rank 8+
148
263
Open Page Rank 7+
339
1,127
Open Page Rank 6+
482
2,466
Open Page Rank 5+
681
4,672
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Sailthru · Sendinblue · share of sites in each country using one or the other
France
646
30,954
United States
1,599
22,537
Germany
682
16,656
Italy
613
15,681
United Kingdom
1,033
13,949
India
943
11,543
Spain
644
11,748
Netherlands
585
9,324
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Sailthru | Sendinblue |
|---|---|---|
| LCP | 2 s | 2 s |
| INP | 125 ms | 75 ms |
| CLS | 0.05 | 0 |
| TTFB | 700 ms | 900 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.