MailChimp vs Rockerbox
Head-to-head usage across the sites we track.
Top sites by authority
MailChimp · Rockerbox · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
56
0
Open Page Rank 8+
852
8
Open Page Rank 7+
3,776
37
Open Page Rank 6+
8,015
68
Open Page Rank 5+
15,311
99
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
MailChimp · Rockerbox · share of sites in each country using one or the other
United States
140,200
328
United Kingdom
64,810
210
Canada
41,963
238
India
40,362
226
Italy
33,400
117
Netherlands
31,497
108
Australia
31,343
158
Spain
31,220
120
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | MailChimp | Rockerbox |
|---|---|---|
| LCP | 1.9 s | 2 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0 |
| TTFB | 900 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.