# Inbox Monster: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 4 judge labels across 1 category by 3 of 14 models. Page: https://www.gane.ai/index/gtm/vendors/inbox-monster

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Email deliverability and testing tools](https://www.gane.ai/index/gtm/marketing/email-deliverability-and-testing/index.md) | 0% | 47 | 25% | 4 |

## What the models said for it

- "Inbox Monster — Enterprise-grade testing (for larger teams)" (Kimi K2, Email deliverability)
- "Full-suite testing, warming, monitoring, and AI insights." (Grok 4.20, Email deliverability)

## And against it

- "rather than paying for an expensive all-in-one suite (like Validity Everest or Inbox Monster, which can cost hundreds per month)" (Gemini 3.5 Flash, Email deliverability)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 1 | 1 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 1 | 0 | 0 | 1 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 0 | 0 | 0 | 0 |
| Kimi K2 | 0 | 1 | 1 | 0 | 2 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named Inbox Monster, from 20 of the 21 answers that named it (only the models that return a source list).

### Domains cited

- mailgun.com: 10
- mailtrap.io: 9
- validity.com: 8
- g2.com: 7
- inboxmonster.com: 7 (its own site)
- emailtooltester.com: 6
- salesdorado.com: 6
- mailtester.com: 5
- myemailverifier.com: 5
- prospeo.io: 5

### Pages cited

- https://mailtrap.io/blog/email-deliverability-tools: 7
- https://myemailverifier.com/blog/email-deliverability-tools: 5
- https://salesdorado.com/en/inbound-marketing/email-testing-tools: 5
- https://instantly.ai/inbox-placement: 4
- https://validity.com/wp-content/uploads/2021/06/Everest-Features.pdf: 4
- https://amplemarket.com/blog/best-email-deliverability-tools: 3
- https://emailtooltester.com/en/email-deliverability-test: 3
- https://g2.com/categories/email-deliverability: 3

## What it publishes

Every page inboxmonster.com exposes, read 2026-10-05: 166 addresses. By kind, pages and the last 90 days:

- blog: 112 pages, 20 in the last 90 days, latest 2026-10-01
- case study: 1 pages, 0 in the last 90 days, latest undated
- webinar or virtual event: 1 pages, 0 in the last 90 days, latest 2026-06-10
- conference or event: 3 pages, 0 in the last 90 days, latest 2026-04-30
- template or tool: 1 pages, 0 in the last 90 days, latest 2026-06-24
- glossary or explainer: 3 pages, 0 in the last 90 days, latest 2026-06-16
- Recent: 2026-10-01 blog: Email design trends 2026 holiday season https://inboxmonster.com/blog/email-design-trends-2026-holiday-season
- Recent: 2026-09-23 blog: Gmail reputation data is removed postmaster tools https://inboxmonster.com/blog/gmail-reputation-data-is-removed-postmaster-tools
- Recent: 2026-09-22 blog: A review of apples ai preview text https://inboxmonster.com/blog/a-review-of-apples-ai-preview-text
- Recent: 2026-09-22 blog: Apple brings ai to its mail app    what does it mean for you https://inboxmonster.com/blog/apple-brings-ai-to-its-mail-app----what-does-it-mean-for-you
- Recent: 2026-09-22 blog: Black friday transactional trigger emails https://inboxmonster.com/blog/black-friday-transactional-trigger-emails
- Recent: 2026-09-22 blog: Dark mode email qa guide https://inboxmonster.com/blog/dark-mode-email-qa-guide

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.