Two of fourteen models named MailReach first on the direct prompt; zero named Microsoft SNDS. MailReach was named by eleven of the fourteen models and Microsoft SNDS by ten and MailReach carries 30 labels and Microsoft SNDS 15, so the shares are not directly comparable.
Named in one category this edition.
By Microsoft, Vancouver, Canada, founded 1975. 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, MailReach and Microsoft SNDS were named in the same answer fifteen times, of the 62 answers naming MailReach and the 41 naming Microsoft SNDS. In those answers Microsoft SNDS took the first choice two times and MailReach zero.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | ||||||
| GPT-5.4 mini | ||||||
| Gemini 3.5 Flash | MS | |||||
| Perplexity Sonar | MS | |||||
| Grok 4.1 Fast | MS | |||||
| Mistral Small | ||||||
| DeepSeek V4 Flash | MS | |||||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | MS | |||||
| Kimi K2 | ||||||
| GLM 4.7 FlashX | ||||||
| MiniMax M2.5 | ||||||
| GPT-6 Luna | ||||||
| Muse Glimmer 30B | MS |
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. Five of six in this category shown.
“The tool may not accurately reflect deliverability for all B2B scenarios, so approach with caution if your audience is large or uses corporate email systems.” Mistral Small · negative prompt · soft negative
“Tools like GlockApps, MailReach, and Mailtrap vary in real-time validation depth — only some verify addresses at scale before sending.” Muse Glimmer 30B · negative prompt · soft negative
“MailReach is the best budget option for warmup and placement testing bundled into one affordable plan” Claude Haiku 4.5 · budget prompt · first choice
“or MailReach (warm‑up + testing at a lower price)” GLM 4.7 FlashX · direct prompt · first choice
“MailReach is the best overall choice in 2026” DeepSeek V4 Flash · direct prompt · first choice
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“Set up Google Postmaster Tools (free) and Microsoft SNDS (free). These are the only tools that provide direct, unvarnished reputation data” Gemini 3.5 Flash · negative prompt · first choice
“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
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.