# MailTester: 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/mailtester/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Email verification | 0% | 19 | 0% | 2 |

## What the models said for it

- "Use specialized verification tools (like Mailtester, Debounce, or Kickbox) if your goal is purely list hygiene" (Qwen 3.7 Flash, Email verification)
- "MailTester (real inbox placement testing)" (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.