AI Indexes
GTM AI Index
September 2026 Edition, published September 15, 2026 · The permanent record of that edition, superseded since. The current standing is on 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 company. 48 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing · first-choice share
44%
Clear leader
44Postalytics08Lob06Click2Mail42others

44% of first choices, clear leader.

ShowinginAll 112 categories in the September 2026 Edition →

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment; they sit side by side and are never added together.

The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all twelve models, for a mid-market B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01Postalytics44%9%56endorsed leader
02Lob8%23%57accepted challenger
03Sendoso6%28%36criticized challenger
04Click2Mail6%12%16accepted challenger
05Postie6%7%14accepted challenger
06Thanks.io4%0%11accepted challenger
07PostGrid2%32%38criticized challenger
08Reachdesk2%24%25accepted challenger
09Postal2%20%15accepted challenger
Show the one product at 0%, ordered by negative rate
10PFL0%21%14accepted challenger
Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its product page.
All twenty-eight head-to-head pages: the top eight products, each against each

Recommended versus criticized

Every product with at least 10 labels here, on both axes. The 30% line names a quadrant, not the verdict above: that one needs more than 40%.

Criticized challengerCriticized default
Negative label rate →
01
02
03
04
05
06
07
08
09
10
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01Postalytics44%
02Lob8%
03Sendoso6%
04Click2Mail6%
05Postie6%
06Thanks.io4%
07PostGrid2%
08Reachdesk2%
09Postal2%
10PFL0%

What they warned about

Three of twelve models held their first choice under the paraphrase. Claude Haiku 4.5, GPT-5.4 mini, Gemini 3.5 Flash, Perplexity Sonar, Grok 4.20, Mistral Small, Llama 4 Maverick, Qwen 3.7 Flash and Kimi K2 changed. 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.
PostGrid
32%
12 of 38 labels negative · 11 of 12 models · 3 hard negative
“here are the direct mail automation platforms you should **avoid or approach with caution**... **2. PostGrid** ... **Faulty tracking**” Kimi K2, negative prompt
Lob
23%
13 of 57 labels negative · 11 of 12 models · 1 hard negative
“Best Avoid If: You're not technical, need global reach, or budget-sensitive.” Grok 4.20, negative prompt
Sendoso
28%
10 of 36 labels negative · 7 of 12 models · 3 hard negative
“Several AI models recommend avoiding it for direct mail automation due to negative feedback and limitations in scalability and pricing transparency.” Mistral Small, negative prompt
Reachdesk
24%
6 of 25 labels negative · 5 of 12 models · 1 hard negative
“Reachdesk is mentioned as a platform to avoid for high-volume direct mail automation” Mistral Small, negative prompt

What they cite

Citations exist only for the models that return a source list: fourteen of the twelve in this edition, and all six flagship models on the expanded tier.

Sites the answers cite

79 of 84 answers in this category came back with a source list, from 14 of 12 models: citations where the model returns them, or the search results it consulted. 1144 links across 167 sites, every framing counted. Ranked by the number of answers carrying the site or page.

vendor site · Guideflow57 answers · 58 citations · 12 models
42 answers · 54 citations · 12 models
vendor site · Postalytics39 answers · 65 citations · 13 models
36 answers · 91 citations · 13 models
33 answers · 47 citations · 10 models
vendor site · Lob26 answers · 43 citations · 10 models
vendor site · Mailmodo25 answers · 28 citations · 10 models
vendor site · CIENCE25 answers · 25 citations · 11 models
23 answers · 23 citations · 10 models
22 answers · 37 citations · 11 models
vendor site · SourceForge22 answers · 27 citations · 10 models
vendor site · Oppizi19 answers · 21 citations · 11 models

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.

Search against answers

Each company's standing in the answers beside its site's footprint in Google search, one row a site: the products the models named on it with their shares, and the share they add up to; monthly searches on Google, and DataForSEO's estimate of AI search demand (modeled from search signals, directional, not a count of queries to any assistant), for the most-searched of the company's and its products' names (the name is in each row's hover text); estimated monthly organic visits to the site; and its best position in Google's top ten for “best direct mail automation platform”, “direct mail automation platform”. US estimates from DataForSEO and Google's Ads Transparency Center. A small company's site, or a mid-sized company's site for its flagship, is marked company; a product on a large parent's site (Google, Microsoft) has no site figures. A column with no figures for this category is left out, and an empty cell means none were seen, not none exist. Two measurements side by side: neither is read as the cause of the other.
Company and productsShareOwn site citedName searches, GoogleAI search demand, est.Organic visitsPaid search a month, est.Google ads, last 30 daysBest Google position
Postalytics postalytics.com44%1901,000390,338282
Lob lob.com8%28927,1006,31955,936109
Sendoso sendoso.com6%3218,10010813,840107
Click2Mail click2mail.com6%641,9002425,581$416
Postie postie.com6%491,00050345123
Thanks.io thanks.io4%3232004300
Stannp stannp.com4%177209
PostGrid postgrid.com2%1681,60011196,042$7651203
Reachdesk reachdesk.com2%2312,400251,2909
Postal postal.com2%16027,10064,09055,299

Google's top ten for the two searches hold 13 sites; 4 of them are among the sites the models cited here (g2.com, lob.com, postalytics.com, thecmo.com). The first result for “best direct mail automation platform” is thecmo.com.

How 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.
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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 Haiku 4.5Postalytics
Two alternativesLob, Sendoso
PFL Direct Mail PlatformChanged
Three alternativesMX Group, PostGrid, Reachdesk
Lob, PostGrid Print Mail API
Six alternativesPostal, Postalytics, Postie, Reachdesk, Sendoso, Stannp
Click2Mail, Postie
One alternativePostalytics
no first choiceagainst: Direct Mail Processing, LLC, Lob, PostGrid, Sendoso
GPT-5.4 miniSendoso
One alternativePFL
PostalyticsChanged
One alternativeLob
against: Click2Mail
Lob, PostGrid
Two alternativesReachdesk, Sendoso
Lob
One alternativePCM Integrations
no first choicenothing named
Gemini 3.5 FlashReachdesk
Six alternativesAlyce, Lob, PostGrid, Postal, Postalytics, Sendoso
PostalyticsChanged
Two alternativesPostal, Reachdesk
against: Lob, Sendoso
Lob
Six alternativesDirectMail.io, Poplar, PostGrid, PostPilot, Postalytics, Reachdesk
against: Sendoso
Thanks.io
Four alternativesClick2Mail, Oppizi, Postalocity, PostcardMania
against: PostPilot
Lob
Five alternativesPostPilot, Postal, Postalytics, Reachdesk, Sendoso
against: Lob, PostGrid, PostPilot, Postal, Sendoso
Perplexity SonarPostGrid
One alternativeReachdesk
against: Lob, Quadient Inspire
PostalyticsChanged
Three alternativesPFL Direct Mail, PostGrid, PostcardMania
Lob, PostGrid
Five alternativesInkit, PostPilot, Postalytics, Reachdesk, Sendoso
Postalytics
Two alternativesClick2Mail, Thanks.io
against: PostPilot
no first choiceagainst: PostGrid, RRD
Grok 4.20Sendoso
Two alternativesLob, PostGrid Print & Mail
PostalyticsChanged
Three alternativesLob, PostGrid, Sendoso
no first choiceagainst: Click2Mail, PostcardMania, SendvoClick2Mail, Thanks.ioagainst: Lob, PostGrid, PostalyticsLob, Postalytics
One alternativeInkit
against: Direct Mail, Lob, PFL, PostGrid, Reachdesk
Mistral SmallPostie
Two alternativesPFL, Postalytics
Mailers+4Changed
Two alternativesBanjo, Postie
Lob
Five alternativesCactus Mailing, Click2Mail, PFL Direct Mail Platform, Postalytics, Sendoso
Postalytics
Two alternativesDirectMail.io, Thanks.io
against: Postie
no first choiceagainst: Iterable, PostGrid, Postal, Postalytics, Reachdesk, Sendoso
DeepSeek V4 FlashPostalytics
Five alternativesLob, PFL, Postal, Postie, Sendoso
PostalyticsHeld
Two alternativesLob, Sendoso
Lob
Eight alternativesClick2Mail, DirectMail.io, PFL, PostGrid, Postalytics, Postie, Reachdesk, Sendoso
Mailjoy, Stannp
Two alternativesClick2Mail, Postalytics
no first choiceagainst: Lob, PostGrid, Postalytics, Reachdesk
Llama 4 MaverickPostie
One alternativePostal
no first choiceChangedno first choiceno first choiceno first choicenothing named
Qwen 3.7 FlashSendoso
Four alternativesCIENCE, Cobro, Lob, PebblePost
MadgemonkeyChanged
Two alternativesPrintNanny, RabbitHQ
Postalytics
Three alternativesLob, Quadient, Thanks.io
Postalytics
Two alternativesClick2Mail, Print.one
no first choiceagainst: GrowMail, Lob, Postalytics, Sendoso
Kimi K2Lob, Postal
Two alternativesPFL, Postalytics
against: Sendoso
PostalyticsChanged
Two alternativesLob, Sendoso
against: PFL
Lob
Six alternativesInkit, PFL, PostGrid, Postalytics, Sendoso, Thanks.io
Click2Mail
Three alternativesInkit, Lob, Postalytics
no first choiceagainst: Alyce, Lob, PFL Direct Mail Platform, PostGrid, Reachdesk, Sendoso
GLM 4.7 FlashXPostalytics
Four alternativesLob, PostGrid, Postal, Sendoso
PostalyticsHeld
Three alternativesLob, PostGrid, Sendoso
Oppizi
Seven alternativesClick2Mail, DirectMail.io, Lob, Postalytics, Reachdesk, Send Jim, Thanks.io
PostPilot
Two alternativesPostGrid, Postalytics
no first choiceagainst: Direct Mail, Lob, PostGrid
MiniMax M2.5Postalytics
One alternativePFL Direct Mail Platform
against: Reachdesk
PostalyticsHeld
Three alternativesLob, PostGrid, Postie
Lob, PostGrid
Three alternativesPostal, Reachdesk, Sendoso
Postalytics
Two alternativesLob, VistaPrint
no first choiceagainst: Lob, PostGrid, Reachdesk, Sendoso, Stadium/Snackmagic/Swagmagic
Bold is the first choiceAlternatives are counted; the count opens them.What the answer argued against

The 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
Seventy-two rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency
Direct recommendationClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 13:01yes149 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 10:25yes23 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-10-01 13:42yes1627 s
Direct recommendationPerplexity Sonarsonar2026-10-01 07:50yes203 s
Direct recommendationGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 08:37yes247 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-10-01 10:06yes187 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 10:24yes1921 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 13:40yes54 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 11:55yes942 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-10-01 13:37yes1730 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 12:41yes21112 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 08:41yes2330 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 07:49yes1810 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 12:30yes35 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-10-01 14:02yes1824 s
ParaphrasePerplexity Sonarsonar2026-10-01 08:08yes183 s
ParaphraseGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 08:54yes198 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-10-01 12:42yes53 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 12:53yes2324 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 11:26yes51 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 08:07no033 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-10-01 12:28yes2019 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 13:59yes19288 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 08:39yes1830 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 12:50yes179 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 12:14yes67 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-10-01 10:49yes2227 s
ComparativePerplexity Sonarsonar2026-10-01 11:39yes206 s
ComparativeGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 07:48yes2111 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-10-01 09:50yes910 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 07:48yes2143 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 12:29yes51 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 10:11yes1043 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-10-01 13:13yes1729 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 11:46yes2228 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 11:34yes2439 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 09:13yes97 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 12:06yes26 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-10-01 10:28yes1625 s
Budget constrainedPerplexity Sonarsonar2026-10-01 08:06yes183 s
Budget constrainedGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 07:33yes247 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-10-01 08:09yes208 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 09:40yes2317 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 12:13yes52 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 07:40yes1772 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-10-01 11:55yes1823 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 09:00yes2327 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 08:02yes617 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 12:15no06 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 11:34no09 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-10-01 13:36yes924 s
Scale constrainedPerplexity Sonarsonar2026-10-01 09:55yes145 s
Scale constrainedGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 08:19yes136 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-10-01 09:16no09 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 12:48yes2299 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 08:22yes52 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 09:02no028 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-10-01 07:43yes2038 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 08:19yes1555 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 09:39yes534 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 10:53yes198 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 11:56yes56 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-10-01 11:01yes1022 s
Negative framingPerplexity Sonarsonar2026-10-01 08:23yes184 s
Negative framingGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 09:00yes2212 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-10-01 08:08yes54 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 09:42yes2320 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 13:35yes52 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 13:50yes2042 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-10-01 13:25yes2424 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 11:16yes2128 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 13:12yes1019 s

Normalization in this category

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

ShowHide
Category-scoped readings
None. Every name in this category resolved on its own.
Unresolved, counted raw
Cactus Mailing
ClickBack
Cobro
DirectEdge
FedEx Office
MX Group
Madgemonkey
Mailsprint
PFL - Printing For Less
PFL Direct Mail
PostGrid Print & Mail
PostGrid Print Mail API
Postalocity
Print.one
PrintNanny
RRelevateAI
RabbitHQ
Rhythm
Send Jim
Sendvo
SimplePrint
Wrapbook
Discontinued, still offered
No shut-down product was recommended here.
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