# Email List Validation: how AI models rank it, September 2026

GTM AI Recommendation Index, September 2026 Edition. Named in 2 judge labels across 1 categories by 2 of 12 models. Page: https://gtm-ai-index.com/vendors/email-list-validation/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Email verification | 0% | 52 | 100% | 2 |

## And against it

- "Poor customer support - Inadequate accuracy in email validation - Freezing during list uploads" (MiniMax M2.5, Email verification)
- "API completely broken - fails to verify emails that the web interface can validate" (GLM 4.7 FlashX, Email verification)

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, September 2026 Edition, gtm-ai-index.com.