SparkPost vs. GMass
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | SparkPost | GMass |
|---|---|---|
| Avg. rating | 4.0 | 4.7 |
| Total reviews | 83 | 1,335 |
| Review growth (QoQ) | — | -12.5% |
| Products on G2 | 2 | 1 |
| Categories covered | 3 | 2 |
| Best category rank | #31 in Transactional Email | #11 in Email Marketing |
| Small Business | 45.1% | 86.2% |
| Mid-Market | 29.3% | 11.2% |
| Enterprise | 25.6% | 2.5% |