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+
59
2
Open Page Rank 8+
871
10
Open Page Rank 7+
3,844
39
Open Page Rank 6+
8,214
70
Open Page Rank 5+
15,705
100
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
142,004
324
United Kingdom
65,019
203
Canada
42,102
233
India
41,567
224
Australia
32,722
157
Germany
31,989
129
Italy
31,919
111
France
31,178
122
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | MailChimp | Rockerbox |
|---|---|---|
| LCP | 2 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, 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.