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+
55
2
Open Page Rank 8+
881
11
Open Page Rank 7+
3,928
38
Open Page Rank 6+
8,381
69
Open Page Rank 5+
16,023
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
161,030
367
United Kingdom
74,844
230
Canada
48,970
262
India
47,917
254
France
37,876
154
Australia
37,236
181
Italy
37,051
125
Germany
36,354
152
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, 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.