Constant Contact vs OneSignal
Head-to-head usage across the sites we track.
Top sites by authority
Constant Contact · OneSignal · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Constant Contact · OneSignal · share of sites in each country using one or the other
United States
23,524
10,769
India
1,394
12,179
Brazil
446
8,551
Canada
2,888
5,091
United Kingdom
1,288
6,487
Germany
431
6,588
France
402
5,745
Spain
394
5,712
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Constant Contact | OneSignal |
|---|---|---|
| LCP | 1.7 s | 2.5 s |
| INP | 50 ms | 100 ms |
| CLS | 0 | 0 |
| TTFB | 800 ms | 1100 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.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
Constant Contact to OneSignal
| Domain | When |
|---|---|
| neworleansrvresort.com | Nov 2025 |
OneSignal to Constant Contact
| Domain | When |
|---|---|
| rft.com | Jul 2026 |
| southasianherald.com | Jan 2026 |
| neworleansrvresort.com | Nov 2025 |