Validity vs Folderly
Side-by-side from the Top 11 ranking of GlockApps vs Validity vs Mail-tester: 11 Best Email Deliverability Tools 2026. Last verified June 15, 2026.
The short answer
Validity ranks higher on Top 11 (#2 vs #5) for Email marketers and developers improving inbox placement rates. The enterprise standard for reputation data, sender certification, and large-scale list verification.
At a glance
| Validity | Folderly | |
|---|---|---|
| Top 11 rank | #2 / GlockApps vs Validity vs Mail-tester: 11 Best Email Deliverability Tools 2026 | #5 / GlockApps vs Validity vs Mail-tester: 11 Best Email Deliverability Tools 2026 |
| Score (out of 9.4) | 9 | 8.3 |
| Best for | Enterprise reputation management | Fixing cold outreach deliverability |
| Pricing | $$$$ (Custom pricing, est. >$1500/mo) | $$$ ($200 to $2000/mo) |
| HQ | Boston, USA | Wilmington, USA |
| Founded | 2018 | 2019 |
Validity
The enterprise standard for reputation data, sender certification, and large-scale list verification.
www.validity.com/See full entry in GlockApps vs Validity vs Mail-tester: 11 Best Email Deliverability Tools 2026
Folderly
A specialized platform for fixing deliverability problems common in cold email campaigns.
folderly.com/See full entry in GlockApps vs Validity vs Mail-tester: 11 Best Email Deliverability Tools 2026
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.