# Kickbox vs NeverBounce: which do AI models recommend for email verification, September 2026

GTM AI Recommendation Index, September 2026 Edition, Email verification. One of twelve models named Kickbox first on the direct prompt; zero named NeverBounce. Page: https://gtm-ai-index.com/gtm-data/email-verification/kickbox-vs-neverbounce/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Kickbox | 4% | #5 of 11 | 0% | 27 | 12 of 12 |
| NeverBounce | 2% | #8 of 11 | 8% | 39 | 12 of 12 |

## The direct prompt, model by model

- Llama 4 Maverick: kickbox first (first choices: Clearout, Hunter, Kickbox)
- Claude Haiku 4.5: neither first, one named (first choices: Bouncer, Skrapp) (alternatives: NeverBounce, ZeroBounce)
- Gemini 3.5 Flash: neither first, one named (first choices: Bouncer) (alternatives: Allegrow, BounceBan, NeverBounce, ZeroBounce)
- Grok 4.1 Fast: neither first, one named (first choices: Hunter, ZeroBounce) (alternatives: Bouncer, Clearout, Kickbox)
- Mistral Small: neither first, one named (first choices: ZeroBounce) (alternatives: Bouncer, Clearout, Hunter, NeverBounce)
- DeepSeek V4 Flash: neither first, one named (first choices: Bouncer) (alternatives: Hunter, NeverBounce, ZeroBounce)
- Qwen 3.7 Flash: neither first, one named (first choices: ZeroBounce) (alternatives: Bouncer, EmailListVerify, Kickbox, MillionVerifier)
- GLM 4.7 FlashX: neither first, one named (first choices: Clearout) (alternatives: Hunter, Kickbox)
- GPT-5.4 mini: neither named (first choices: ZeroBounce) (alternatives: Hunter)
- Perplexity Sonar: neither named (first choices: Bouncer) (alternatives: Hunter, MillionVerifier, ZeroBounce)
- Kimi K2: neither named (first choices: ZeroBounce) (alternatives: Bouncer, Clearout, Hunter)
- MiniMax M2.5: neither named (first choices: ZeroBounce) (alternatives: Hunter)

## What the models said about Kickbox

- "The best email verification service for a mid-market B2B company is Hunter, Clearout, or Kickbox" (Llama 4 Maverick, direct prompt, first choice)
- "or Kickbox if you want point-of-entry validation integrated into your existing tech stack." (Claude Haiku 4.5, paraphrase prompt, first choice)
- "include Bouncer, ZeroBounce, Kickbox, and NeverBounce" (Kimi K2, negative prompt, first choice)

## What the models said about NeverBounce

- "Verdict: Avoid for critical campaigns due to reliability and support issues" (Mistral Small, negative prompt, hard negative)
- "NeverBounce charges for unknowns... NeverBounce slowest (~200 min for 10K)" (DeepSeek V4 Flash, comparative prompt, soft negative)
- "include Bouncer, ZeroBounce, Kickbox, and NeverBounce" (Kimi K2, negative prompt, first choice)
- "NeverBounce is the strongest pick for bulk list hygiene at scale." (Claude Haiku 4.5, paraphrase prompt, first choice)
- "NeverBounce (Subscription Model) — Best Predictable Micro-Budget ... Starts at $10/month for 1,000 verifications." (Qwen 3.7 Flash, budget prompt, alternative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.