Zeta Global vs. Customer.io
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | Zeta Global | Customer.io |
|---|---|---|
| Avg. rating | 4.1 | 4.4 |
| Total reviews | 368 | 990 |
| Review growth (QoQ) | -100.0% | +7.1% |
| Products on G2 | 7 | 1 |
| Categories covered | 26 | 7 |
| Best category rank | #8 in Data Management Platform (DMP) | #1 in Transactional Email |
| Small Business | 21.5% | 59.3% |
| Mid-Market | 51.2% | 37.4% |
| Enterprise | 27.3% | 3.2% |