GlockApps vs Google Postmaster Tools
Nine of fourteen models named GlockApps first on the direct prompt; zero named Google Postmaster Tools. GlockApps was named by fourteen of the fourteen models and Google Postmaster Tools by thirteen and GlockApps carries 57 labels and Google Postmaster Tools 30, so the shares are not directly comparable.
Named in one category this edition.
Google Postmaster Tools
accepted challengerBy Google, Mountain View, California, United States, founded 1998. 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.
By framing
GlockAppsFirst choices, of fourteen modelsGoogle Postmaster ToolsAcross every category in the October 2026 Edition, GlockApps and Google Postmaster Tools were named in the same answer fifty-seven times, of the 153 answers naming GlockApps and the 77 naming Google Postmaster Tools. In those answers Google Postmaster Tools took the first choice thirteen times and GlockApps twenty-one.
Every model, every framing
| Model | DirectGP | ParaphraseGP | ComparativeGP | Budget-constrainedGP | Scale-constrainedGP | NegativeGP |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | | |||
| GPT-5.4 mini | | | | |||
| Gemini 3.5 Flash | | | | GP | | GP |
| Perplexity Sonar | | GP | ||||
| Grok 4.1 Fast | | GP | | GP | | GP |
| Mistral Small | | | GP | | GP | |
| DeepSeek V4 Flash | GP | GP | GP | GP | GP | |
| Llama 4 Maverick | | GP | ||||
| Qwen 3.7 Flash | | | | GP | GP | |
| Kimi K2 | | | | GP | GP | |
| GLM 4.7 FlashX | | | | GP | ||
| MiniMax M2.5 | | | GP | |||
| GPT-6 Luna | | | | GP | ||
| Muse Glimmer 30B | | | GP | |
GlockAppsGP Google Postmaster Tools first choice named as an alternative argued againstblank: not namedEach cell is one answer, GlockApps on the left and Google Postmaster Tools on the right.The direct prompt
GlockApps first, Google Postmaster Tools not the choice
9 of 14 modelsGoogle Postmaster Tools was named in the answer but not as the choice, or not at all.Neither was the first choice, one was named
4 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
1 of 14 modelsThe answer made no first choice from these two in this category.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.
By buyer segment
GlockApps24%#1 of 15GlockApps34%#1 of 12GlockApps2%#5 of 14What the models said about GlockApps
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“GlockApps became popular for one specific capability... Test credits do not roll over... stops at telling you what is wrong.” Muse Glimmer 30B · negative prompt · soft negative
“a fraction of what enterprise tools like GlockApps ($85+/month) or ZeroBounce ($99/month) would cost” DeepSeek V4 Flash · budget prompt · soft negative
“Good for deeper testing, but pricier; consider only if you have repeated deliverability issues” GLM 4.7 FlashX · budget prompt · soft negative
“For most mid-sized B2B companies, GlockApps offers the best balance of comprehensive diagnostics, B2B-appropriate seed lists, and reasonable pricing.” Claude Haiku 4.5 · paraphrase prompt · first choice
“the best choice is usually GlockApps if you want the strongest balance of inbox placement testing, DMARC monitoring, and mid-market pricing” Perplexity Sonar · direct prompt · first choice
“For most mid-sized B2B companies, GlockApps is the best choice due to its depth of inbox placement testing and deliverability diagnostics.” Mistral Small · paraphrase prompt · first choice
What the models said about Google Postmaster Tools
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
“Best overall for near-zero budget: 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.