Email deliverability and testing tools · RankedMXToolbox
MXToolbox is a set of online tools for checking email and DNS infrastructure · mxtoolbox.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%. 0 of 14 models made it the first choice when asked directly.
Validity Everest is first at 46%.
Why models recommend it
“start with Google Postmaster Tools and MXToolbox, which are both free and cover the most common starting points”Claude Haiku 4.5 · Budget-constrained question · first choice
“Use free tools (Google Postmaster, MXToolbox, Microsoft SNDS) for monitoring”MiniMax M2.5 · Negative question · first choice
“Start with free tools like MXToolbox and Google Postmaster for diagnostics.”Grok 4.20 · Comparative question · first choice
“If you are setting up technical authentication (SPF, DKIM, DMARC): Use MXToolbox or Mail-Tester.”Gemini 3.5 Flash · Comparative question · alternative
What gives them pause
“Blocklist-only monitors such as MXToolbox or Heatwave: a clean result does not mean good deliverability”Perplexity Sonar · Negative question · warning
“basic free blocklist checkers (in isolation) ... Over-reliance can give false confidence.”Grok 4.20 · Negative question · warning
Also on the shortlist
The products named in the same answers as MXToolbox, over the 80 answers that named it, and how often each was the first choice instead.
| Product | Named together | Picked instead | |
|---|---|---|---|
| 64 | 18 | Compare → | |
| 50 | 5 | Compare → | |
| 47 | 2 | Compare → | |
| 34 | 2 | Compare → | |
| 28 | 10 | Compare → | |
| 28 | 1 | Compare → | |
| 25 | 2 | Compare → | |
| 25 | 1 | View → | |
| 23 | 0 | View → | |
| 20 | 0 | View → |
What the models named instead of MXToolbox →
A side-by-side page exists where both products are among a category's top eight.
At a glance
Stated on MXToolbox's own site, not checked by Gane.
- For
- email novice, professional, marketer or technician
- Price stated
- Free $0/month; Delivery Center $129/month; Delivery Center Plus $399/month
- Starting price
- 0/month
- Free plan or trial
- Free MxToolBox Account — Get one (1) Free Monitor to alert you to Email Delivery Issues
- Integrations
- 6
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 75 of the 80 answers that named MXToolbox and are not a share of its labels.
Domains cited
235 of the 235 domain citations in answers naming MXToolbox 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 | 1 | 0 | 0 | 0 | 1 |
| GPT-5.4 mini | 0 | 0 | 1 | 0 | 1 |
| Gemini 3.5 Flash | 0 | 3 | 0 | 0 | 3 |
| Perplexity Sonar | 0 | 2 | 0 | 1 | 3 |
| Grok 4.20 | 1 | 1 | 1 | 1 | 4 |
| Mistral Small | 0 | 1 | 1 | 0 | 2 |
| DeepSeek V4 Flash | 0 | 2 | 0 | 0 | 2 |
| Llama 4 Maverick | 0 | 0 | 1 | 0 | 1 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 1 | 1 | 0 | 2 |
| GLM 4.7 FlashX | 0 | 2 | 0 | 0 | 2 |
| MiniMax M2.5 | 1 | 3 | 1 | 0 | 5 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 4 | 1 | 0 | 5 |
What it publishes
| Kind | Pages | Last 90 days | 2025-11 to 2026-10 | Latest | Categories named |
|---|---|---|---|---|---|
| Blog | 834 | 47 | 2026-10-02 | Direct mail | |
| Glossary or explainer | 19 | 0 | 2019-08-01 | ||
| Comparison | 3 | 0 | 2024-04-01 | ||
| Template or tool | 3 | 0 | 2018-12-01 | ||
| Report or ebook | 2 | undated | |||
| Case study | 1 | 0 | 2020-04-01 | ||
| Conference or event | 1 | 0 | 2016-10-01 |
Most recent
How it is countedHide how it is counted
Every page mxtoolbox.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.