GTM AI Index
September 2026 Edition, expanded tier · The six flagship models on every category, as published September 9, 2026. The public index runs on the standard tier; this record is what the Expanded Edition Pack delivers on one category. The category page →
Index Marketing September 2026 Edition

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Asked as “direct mail automation platform”, and as “print and direct mail marketing tool”, on behalf of a mid-market B2B software company. 46 first choices recorded across the direct, paraphrase, budget and scale prompts, six models each.
Standing
Clear leader
54% of first choices, clear leader.

01The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all six models, for a mid-market B2B software company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01Postalytics54%7%54endorsed leader
02Lob9%27%48criticized challenger
03Stannp7%0%21accepted challenger
04PostGrid7%25%40criticized challenger
05Sendoso4%22%45accepted challenger
06Click2Mail4%25%24criticized challenger
07PFL4%26%23criticized challenger
08Mailjoy2%11%19accepted challenger
09Reachdesk2%18%22accepted challenger
Show the two products at 0%, ordered by negative rate
11Postie0%31%13criticized challenger
10Postal0%6%18accepted challenger
Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its vendor page.

One product takes 54% of first choices here, so the chart would put ten markers in one corner and one at the far edge. The two measurements it plots are columns in the standing above: share, and the negative label rate. Five products carry a negative rate above 25% in this category. Jump to the standing

02What they warned about

A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.
Lob
27%
13 of 48 labels negative · 9 of 6 models · 4 hard negative
“Platforms to Avoid on a Tight Budget- **Lob** — Great API, but the **$260–550/month** platform fee” DeepSeek V4 Flash, budget prompt
PostGrid
25%
10 of 40 labels negative · 8 of 6 models · 3 hard negative
“Platforms to Avoid on a Tight Budget ... **Postgrid** — Cheaper API alternative ($0–99/mo), but pricing is often quote-based” DeepSeek V4 Flash, budget prompt
Sendoso
22%
10 of 45 labels negative · 7 of 6 models · 3 hard negative
“Platforms with Significant Concerns ... Sendoso (and Postal.io - now acquired by Sendoso) Key Red Flags: Non-refundable prepaid balances that expire” Kimi K2, negative prompt
Click2Mail
25%
6 of 24 labels negative · 5 of 6 models · 1 hard negative
“Broken/misleading delivery tracking... their website is simply not working properly” DeepSeek V4 Flash, negative prompt

03What they cite

Citations exist only for the models that return a source list: four of the six in this edition.

Sites the answers cite

22 of 72 answers in this category came back with a source list, from 4 of 6 models: citations where the model returns them, or the search results it consulted. 6 of those lists are Google grounding redirects that name no site and are left out of the counts. 196 links across 62 sites, every framing counted. Ranked by the number of answers carrying the site or page. The other 2 models searched through a gateway that returned no source list on this edition.

vendor site · Postalytics10 answers · 12 citations · 3 models
vendor site · Guideflow10 answers · 10 citations · 2 models
vendor site · Capterra9 answers · 12 citations · 3 models
8 answers · 8 citations · 2 models
7 answers · 13 citations · 3 models
vendor site · PostGrid6 answers · 8 citations · 2 models
vendor site · Gartner6 answers · 6 citations · 2 models
6 answers · 6 citations · 2 models
5 answers · 11 citations · 1 model
vendor site · Lob5 answers · 9 citations · 3 models
vendor site · WifiTalents5 answers · 8 citations · 1 model
vendor site · DirectMail.io4 answers · 4 citations · 1 model

Pages the answers cite

The ten pages named in the most answers, by full address. A page here is one the models returned with a recommendation, not one the index endorses.

04How they answered

Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.
ModelDirect“What is the best direct mail automation platform for a mid-market B2B company?”Paraphrase“Which print and direct mail marketing tool would you recommend to a mid-sized B2B company?”Comparative“What are the top direct mail automation platforms and how do they differ?”Budget-constrained“What is the best direct mail automation platform for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating a direct mail automation platform. What should we look at?”Negative“Which direct mail automation platforms should I avoid or be cautious about?”
Claude Opus 5no first choiceno first choiceno first choiceno first choiceno first choicenothing named
Claude Opus 4.8no first choiceno first choiceno first choiceno first choiceno first choicenothing named
GPT-6 Astrano first choiceno first choiceno first choiceno first choiceno first choicenothing named
GPT-5.6 Solno first choiceno first choiceno first choiceno first choiceno first choicenothing named
Gemini 3.1 Prono first choiceno first choiceno first choiceno first choiceno first choicenothing named
Perplexity Sonar Prono first choiceno first choiceno first choiceno first choiceno first choicenothing named
Bold is the first choiceAlternatives are counted; the count opens them.What the answer argued against

05The record

One row per call: the version string exactly as returned, whether the model searched, sources cited, and latency. Full answer text is in the free responses file. Download the record
Zero rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency

Normalization in this category

Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.

Category-scoped readings
None. Every name in this category resolved on its own.
Unresolved, counted raw
"Direct Mail" (Mac-based software - directmailmac.com)
Adobe Campaign + Print partners
Direct Mail Manager
DirectIQ / LocusLogic
Distribution Processing Center, LLC
Magileads
Mailbox / Sendoso
Maropost / Mailjet Mail
PostGrid Print & Mail
Postalytics Free Tier
Printavo + Postalytics
PrintingforLess
Twilio Campaigns
Discontinued, still offered
No shut-down product was recommended here.
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