Zero of fourteen models named MXToolbox first on the direct prompt; two named Folderly. MXToolbox was named by twelve of the fourteen models and Folderly by eleven and MXToolbox carries 31 labels and Folderly 20, so the shares are not directly comparable.
Named in two categories this edition.
Named in one category this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the email deliverability and testing tools page.
Across every category in the October 2026 Edition, MXToolbox and Folderly were named in the same answer twenty-five times, of the 72 answers naming MXToolbox and the 52 naming Folderly. In those answers Folderly took the first choice three times and MXToolbox three.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | ||||||
| GPT-5.4 mini | ||||||
| Gemini 3.5 Flash | ||||||
| Perplexity Sonar | ||||||
| Grok 4.1 Fast | ||||||
| Mistral Small | ||||||
| DeepSeek V4 Flash | ||||||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | ||||||
| Kimi K2 | ||||||
| GLM 4.7 FlashX | ||||||
| MiniMax M2.5 | ||||||
| GPT-6 Luna | ||||||
| Muse Glimmer 30B |
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“MxToolbox is an infrastructure diagnostic tool, not a campaign email testing tool... best used only for specific DNS and infrastructure checks, not comprehensive campaign testing.” Claude Haiku 4.5 · negative prompt · hard negative
“Free tools like Mail Tester and MxToolbox handle basic checks but lack the depth for production workflows.” Muse Glimmer 30B · negative prompt · soft negative
“lack depth for production-scale testing, inbox placement simulation, or ongoing monitoring” Grok 4.1 Fast · negative prompt · soft negative
“Best free option: Stack Google Postmaster Tools, Microsoft SNDS, Yahoo Sender Hub, MXToolbox, Mail Tester, AboutMyEmail, and Sender Hub.” GLM 4.7 FlashX · budget prompt · first choice
“free monitoring stack with Google Postmaster Tools, Microsoft SNDS, MXToolbox, and Yahoo Sender Hub” Perplexity Sonar · budget prompt · first choice
“Start with free tools → Google Postmaster Tools + MXToolbox + Mail-Tester free tier” Kimi K2 · budget prompt · first choice
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of five in this category shown.
“Overpriced for most mid-market teams — many reviewers suggest MailReach as a better-value alternative.” DeepSeek V4 Flash · direct prompt · soft negative
“Folderly and GlockApps are top choices due to their comprehensive features and strong reputations” Mistral Small · direct prompt · first choice
“Folderly or Mailtrap would be the top choices.” MiniMax M2.5 · direct prompt · first choice
“Built specifically for B2B sales teams and lead-generation agencies running cold-email campaigns at scale” Claude Haiku 4.5 · direct prompt · alternative
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.