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
23,768
10,882
India
1,474
12,393
Brazil
456
8,647
Canada
2,891
5,156
United Kingdom
1,265
6,633
Germany
445
6,818
France
390
5,900
Spain
362
5,640
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 | 1000 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.
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 |