Email deliverability and testing tools · RankedLitmus
Litmus is an email testing and deliverability tool for checking how email campaigns render and where they land in the inbox · litmus.com ↗
Read the same way at every company size.
The standing depends on who is buying. Every model is asked the same questions for each company size.
GlockApps is first at 25%.
GlockApps is first at 38%. 1 of 14 models made it the first choice when asked directly.
Validity Everest is first at 46%.
Why models recommend it
“I'd generally recommend Litmus if your priority is email testing, QA, rendering previews, and team workflow”GPT-5.4 mini · Paraphrase question · first choice
“Best Overall for Marketing Workflow & Outlook Testing: Litmus”Gemini 3.5 Flash · Paraphrase question · first choice
“Marketing team sending campaigns: Litmus + GlockApps”GPT-5.4 mini · Comparative question · first choice
“the safest "best" choice is usually Litmus”GPT-5.4 mini · Direct question · first choice
What gives them pause
“Caveat: These are primarily design/rendering testing tools. Their inbox placement features are secondary.”Kimi K2 · Paraphrase question · warning
“Overkill (and pricey) for mid-sized teams; better for enterprises”DeepSeek V4 Flash · Paraphrase question · warning
Also on the shortlist
The products named in the same answers as Litmus, over the 68 answers that named it, and how often each was the first choice instead.
| Product | Named together | Picked instead | |
|---|---|---|---|
| 59 | 25 | Compare → | |
| 35 | 0 | View → | |
| 32 | 15 | Compare → | |
| 29 | 5 | Compare → | |
| 29 | 1 | Compare → | |
| 25 | 2 | Compare → | |
| 23 | 0 | Compare → | |
| 23 | 0 | Compare → | |
| 22 | 2 | View → | |
| 18 | 0 | View → |
What the models named instead of Litmus →
A side-by-side page exists where both products are among a category's top eight.
How this is measured
Fourteen AI models from 12 labs are asked the same buying questions six ways, for three company sizes. Standings refresh every edition.
Gane sells AI visibility software. No company can pay to change a result.
Read the method →Sources returned with these answers
Fourteen of the fourteen models returned a source list in this edition: five return the pages they cited and nine the search results they consulted. These counts come from 56 of the 68 answers that named Litmus and are not a share of its labels.
Domains cited
148 of the 160 domain citations in answers naming Litmus came from a third party's page.
Pages cited
Pages are listed as the models cited them.
By model
| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 1 | 0 | 0 | 1 |
| GPT-5.4 mini | 3 | 0 | 0 | 0 | 3 |
| Gemini 3.5 Flash | 1 | 1 | 0 | 0 | 2 |
| Perplexity Sonar | 0 | 1 | 0 | 0 | 1 |
| Grok 4.20 | 0 | 0 | 1 | 0 | 1 |
| Mistral Small | 0 | 2 | 0 | 0 | 2 |
| DeepSeek V4 Flash | 0 | 1 | 1 | 1 | 3 |
| Llama 4 Maverick | 0 | 0 | 1 | 0 | 1 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 0 | 0 | 1 | 1 |
| GLM 4.7 FlashX | 0 | 1 | 0 | 0 | 1 |
| MiniMax M2.5 | 0 | 2 | 0 | 0 | 2 |
| GPT-6 Luna | 0 | 1 | 0 | 0 | 1 |
| Muse Glimmer 30B | 0 | 0 | 1 | 0 | 1 |
What it publishes
| Kind | Pages | Last 90 days | 2025-11 to 2026-10 | Latest | Categories named |
|---|---|---|---|---|---|
| Blog | 1,081 | 7 | 2026-09-02 | CRM, Email marketing | |
| Webinar or virtual event | 60 | 0 | 2022-02-16 | ||
| Case study | 57 | undated | |||
| News or press | 47 | undated | |||
| Comparison | 19 | 0 | 2024-10-18 | ||
| Conference or event | 17 | undated | |||
| Report or ebook | 11 | 0 | 2017-03-13 | ||
| Glossary or explainer | 9 | 0 | 2026-07-02 | ||
| Template or tool | 7 | 0 | 2022-09-20 |
Most recent
- 2026-09-02Best email subject lines for black friday cyber monday blog
- 2026-08-26The email footer small space big responsibility blog
- 2026-08-04How to protect your email program during a rebrand a practitioners guide blog
- 2026-07-24We want your email preference new approach to opting in blog
- 2026-07-21Happy birthday now buy yourself a present the potential of birthday emails blog
- 2026-07-20Email deliverability facts blog
How it is countedHide how it is counted
Every page litmus.com exposes, subdomains included. Kind is read from the address and title. The last 90 days, the latest date and the twelve months count pages by when they were published, from the site's feeds, a date in the address, or the page's own publication date, read from up to a hundred of its most recently changed pages; a page that says only when it last changed is counted in its kind but not in when, so the recent counts are a floor, and a kind none of whose pages gives a publication date reads undated. An event counts as online when its address or title says so (webinar, on demand, virtual or online summit); a conference, summit, trade show, expo or roadshow that does not say so is counted as a conference or event, which on a vendor's site is mostly in person. Read October 5, 2026.