Instantly.ai vs GMass
Side-by-side from the Top 11 ranking of The 11 Best Cold Email Software Tools. Last verified June 21, 2026.
The short answer
Instantly.ai ranks higher on Top 11 (#1 vs #10) for SDRs and founders running outbound cold email campaigns. Best for scaling outreach with unlimited mailboxes and warm-up at a flat, predictable price.
At a glance
| Instantly.ai | GMass | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best Cold Email Software Tools | #10 / The 11 Best Cold Email Software Tools |
| Score (out of 9.4) | 9.2 | 7.6 |
| Best for | Scaling outreach affordably | Gmail-native workflow |
| Pricing | $ ($37 to $97/mo) | $ ($20 to $50/mo) |
| HQ | Cheyenne, USA | Mumbai, India |
| Founded | 2022 | 2015 |
Instantly.ai
Best for scaling outreach with unlimited mailboxes and warm-up at a flat, predictable price.
instantly.aiMethodology and scoring weights live at /methodology. No vendor pays for placement — see about.