GTM AI Index
September 2026 Edition · The permanent record of this edition. The unqualified address always carries the latest edition.
Index Marketing Direct mail › Enterprise September 2026 Edition

Print for enterprise buyers

Asked as “direct mail automation platform”, and as “print and direct mail marketing tool”, on behalf of an enterprise B2B company. 43 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing
Contested
37% of first choices, contested.

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.

01The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all twelve models, for an enterprise B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01Lob37%15%53endorsed leader
02PFL16%10%31accepted challenger
03Sendoso12%29%49criticized challenger
04PostGrid9%19%42accepted challenger
05Postalytics9%22%41accepted challenger
06Reachdesk2%32%22criticized challenger
Show the three products at 0%, ordered by negative rate
09Click2Mail0%80%10criticized challenger
08Postal0%40%10criticized challenger
07Inkit0%10%10accepted 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.

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 →
L01
P02
03
04
05
06
07
08
09
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative50%
Key
01Lob37%
02PFL16%
03Sendoso12%
04PostGrid9%
05Postalytics9%
06Reachdesk2%
07Inkit0%
08Postal0%
09Click2Mail0%

02What they warned about

Three of twelve models held their first choice under the paraphrase. Claude Haiku 4.5, Perplexity Sonar, Mistral Small, DeepSeek V4 Flash, Llama 4 Maverick, Qwen 3.7 Flash, Kimi K2, GLM 4.7 FlashX and MiniMax M2.5 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.
Sendoso
29%
14 of 49 labels negative · 10 of 12 models · 3 hard negative
“Avoid: "Corporate Gifting & ABM" Platforms for High-Volume Mail * **Examples:** Sendoso, Postal.io, Reachdesk” Gemini 3.5 Flash, negative prompt
PostGrid
19%
8 of 42 labels negative · 7 of 12 models
“PostGrid — Caution for Mid-Market Scaling ... the pricing gap and gated enterprise features create procurement friction” Kimi K2, negative prompt
Postalytics
22%
9 of 41 labels negative · 7 of 12 models
“Be Cautious About: Campaign-First "Self-Serve" Platforms (for Transactional Needs) * **Examples:** Postalytics” Gemini 3.5 Flash, negative prompt
Lob
15%
8 of 53 labels negative · 6 of 12 models · 2 hard negative
“platforms that large enterprises should **avoid or approach with extreme caution**... ### **Lob** **Major Red Flags:**” GLM 4.7 FlashX, negative prompt

03What they cite

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

Sites the answers cite

24 of 72 answers in this category came back with a source list, from 4 of 12 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. 212 links across 69 sites, every framing counted. Ranked by the number of answers carrying the site or page. The other 8 models searched through a gateway that returned no source list on this edition.

vendor site · Lob12 answers · 22 citations · 3 models
vendor site · PostGrid11 answers · 16 citations · 3 models
vendor site · Postalytics8 answers · 12 citations · 3 models
vendor site · Guideflow8 answers · 8 citations · 2 models
7 answers · 7 citations · 2 models
7 answers · 7 citations · 3 models
vendor site · Gartner7 answers · 7 citations · 2 models
6 answers · 6 citations · 1 model
5 answers · 11 citations · 2 models
5 answers · 8 citations · 1 model
vendor site · Sendoso5 answers · 7 citations · 3 models
vendor site · DirectMail.io5 answers · 5 citations · 3 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.

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 an enterprise B2B company?”Paraphrase“Which print and direct mail marketing tool would you recommend to a large B2B company with thousands of employees?”Comparative“What are the top enterprise-grade direct mail automation platforms and how do they differ?”Budget-constrained“What is the best direct mail automation platform for a large company that needs predictable total cost across thousands of users?”Scale-constrained“We are a 5,000 person company with SSO, SOC 2 and procurement review requirements evaluating a direct mail automation platform. What should we look at?”Negative“Which direct mail automation platforms should a large enterprise avoid or be cautious about?”
Claude Haiku 4.5PFL
Three alternativesLettrLabs, PostGrid, Postalytics
SendosoChanged
Two alternativesOptilyz, Quadient
no first choicePostGrid
Two alternativesLob, PFL
against: Sendoso
no first choiceagainst: PostGrid
GPT-5.4 miniLob
Two alternativesReachdesk, Sendoso
LobHeld
Two alternativesDIS Direct, mailing.com
Lob
Three alternativesPFL, Postalytics, Sendoso
Lob
One alternativePostGrid
no first choiceagainst: Postal, Reachdesk, Sendoso
Gemini 3.5 FlashPFL
Three alternativesLob, Reachdesk, Sendoso
PFLHeld
Three alternativesLob, Reachdesk, Sendoso
Lob
Four alternativesPFL, Postalytics, Postie, Sendoso
Lob, PFL, Postalytics
Two alternativesFastMail Direct, PostGrid
against: Postal, Sendoso
no first choiceagainst: Click2Mail, PostPilot, Postal, Postalytics, RR Donnelley / RRD, Reachdesk, Sendoso
Perplexity SonarCM.com
Two alternativesPostGrid, Postalytics
SendosoChanged
Three alternativesLob, PFL, Postalytics
Lob
Five alternativesInkit, PFL, PostGrid, Postalytics, Sendoso
Lob
One alternativePostalytics
no first choiceagainst: Postie
Grok 4.1 FastLob
Two alternativesPostGrid, Sendoso
LobHeld
Two alternativesPFL, Sendoso
against: Postalytics
no first choiceLob
Two alternativesPostGrid, Postalytics
against: Click2Mail, Reachdesk, Sendoso
PostGrid
Three alternativesDirectMail.io, Lob, Postalytics
against: Click2Mail, Inkit, LettrLabs, Lob, Pitney Bowes, PostPilot, PostcardMania, Stadium/Snackmagic
Mistral SmallLob
Four alternativesPFL, Postalytics, Reachdesk, Sendoso
Adobe Experience ManagerChanged
Three alternativesHP Exstream, PrintUI, Printable Technologies
PFL
Five alternativesInkit, Lob, Postie, Reachdesk, Sendoso
Lob
Two alternativesPostal, Postalytics
no first choiceagainst: PFL, Sendoso
DeepSeek V4 FlashLob
Two alternativesPFL, Sendoso
PFL TacticChanged
Three alternativesLob, Reachdesk, Sendoso
Lob
Seven alternativesInkit, PFL, PostGrid, Postalytics, Quadient Inspire, Reachdesk, Sendoso
Postalyticsagainst: Click2Mail, Lob, Mailjoy, PFL, Postal, Reachdesk, Sendoso, StannpLob
Two alternativesPFL, Sendoso
against: PostGrid, Postalytics
against: Click2Mail, Lob, PFL, Postalytics, PostcardMania, Reachdesk, Scribeless, Sendoso
Llama 4 MaverickPostGrid
Three alternativesLob, Postalytics, Sendoso
SincerelyChanged
Three alternativesAmazingMail, PFL Tactic, PostGrid
no first choiceno first choiceno first choiceagainst: Click2Mail, Lob, PostGrid, RRD
Qwen 3.7 FlashSendoso
Two alternativesInkit, Lob
PostGrid, PostalyticsChanged
Two alternativesAdobe Campaign, Salesforce Marketing Cloud
Lob
Four alternativesPFL, PostGrid, Postalytics, Sendoso
Quadient
Two alternativesPostalytics, Reachdesk
against: Click2Mail, Lob
no first choiceagainst: Braze, Click2Mail, Iterable, Lob, PostGrid, Postalytics, Salesforce Marketing Cloud, Sendoso, Tremendous
Kimi K2PFL, Sendoso
Two alternativesLob, Reachdesk
PFLChanged
Two alternativesLob, Sendoso
Lob, PostGrid
Three alternativesPFL, Postalytics, Sendoso
Lob
Two alternativesPFL, PostGrid
against: Sendoso
Lob
Three alternativesDirectMail.io, PostGrid, Sendoso
against: PostGrid, Postalytics, Sendoso
GLM 4.7 FlashXPostalytics
Three alternativesLob, Oppizi, PostGrid
against: Sendoso
LobChanged
Three alternativesOppizi, PebblePost, Sendoso
PostGrid
Four alternativesInkit, Lob, Postalytics, Sendoso
Oppizi
One alternativeLob
against: PostGrid, Postalytics
no first choiceagainst: ContactPigeon, Lob, PostGrid, Postalytics, Reachdesk, Sendoso, Stadium, Tremendous
MiniMax M2.5Reachdesk, Sendoso
Two alternativesPFL, Postalytics
PFLChanged
Three alternativesLob, Postal, Sendoso
Lob, Sendoso
Four alternativesPFL, PostGrid, Postal, Reachdesk
Lob
Three alternativesIterable, Postalytics, Sendoso
no first choiceagainst: Lob, PFL Direct Mail Platform, PostGrid, Postalytics, Reachdesk, Sendoso
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
Seventy-two rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency
Direct recommendationClaude Haiku 4.5claude-haiku-4-5-202510012026-09-14 23:09yes68 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:04yes36 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-09-15 00:00yes2026 s
Direct recommendationPerplexity Sonarsonar2026-09-15 04:47yes205 s
Direct recommendationGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 02:49yes011 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-09-14 23:31yes08 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 22:52yes044 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:46yes01 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 02:57yes043 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-09-15 03:32yes051 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:40yes083 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-14 23:43yes016 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 02:32yes1411 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 00:13yes45 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-09-14 23:45yes1722 s
ParaphrasePerplexity Sonarsonar2026-09-14 23:41yes205 s
ParaphraseGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 00:03yes08 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-09-15 01:28no03 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-15 03:54yes022 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 04:57yes02 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 01:26yes051 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-09-15 01:19yes040 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 00:29yes015 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:30yes015 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:29yes89 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:19yes611 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-09-15 00:34yes1225 s
ComparativePerplexity Sonarsonar2026-09-15 03:50yes196 s
ComparativeGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 01:24yes09 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-09-15 00:10yes010 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 03:35yes064 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-14 23:21yes02 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 03:17yes031 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-09-15 04:29yes055 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 01:06yes094 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-14 22:52yes018 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:41yes128 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:59yes45 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:10yes1427 s
Budget constrainedPerplexity Sonarsonar2026-09-15 01:31yes204 s
Budget constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 01:43yes09 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 03:57yes08 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-14 22:56yes022 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 01:27yes01 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:46yes063 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 00:57yes033 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 04:14yes035 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 04:27yes053 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 01:30yes1612 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:46yes38 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-14 23:22yes1026 s
Scale constrainedPerplexity Sonarsonar2026-09-15 02:44yes1910 s
Scale constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 05:00yes09 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-09-14 23:54yes012 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 01:55yes061 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:05yes02 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 05:05no039 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 03:25yes082 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 03:51yes027 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 01:23yes011 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-09-14 23:54yes148 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 01:35yes410 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-09-14 23:32yes2133 s
Negative framingPerplexity Sonarsonar2026-09-15 03:33yes205 s
Negative framingGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 01:03yes013 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-09-15 00:22yes016 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 03:17yes088 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 03:09yes03 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 04:12yes050 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-09-15 00:08yes037 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 04:05yes065 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:50yes028 s

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
DIS Direct
DocuSend
FastMail Direct
Franklin Madison
HP Exstream
IMPGo
Optilyz
Pitney Bowes (Mailing and Shipping Automation)
PrintUI (by Quadient)
Printable Technologies
RR Donnelley / RRD
Stadium/Snackmagic
mailing.com
Discontinued, still offered
No shut-down product was recommended here.
← PRProgrammatic →