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September 2026 Edition, published September 15, 2026 · The permanent record of that edition, superseded since.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 › 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. 54 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing · first-choice share
43%
Clear leader
43Lob13Sendoso09PFL35others

43% 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 an enterprise B2B company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrant
01Lob43%17%71endorsed leader
02Sendoso13%33%45criticized challenger
03PFL9%9%33accepted challenger
04Postalytics9%21%33accepted challenger
05PostGrid7%21%48accepted challenger
06Reachdesk4%25%24criticized challenger
07Postal4%36%14criticized challenger
08Quadient Inspire2%9%11accepted 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
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01Lob43%
02Sendoso13%
03PFL9%
04Postalytics9%
05PostGrid7%
06Reachdesk4%
07Postal4%
08Quadient Inspire2%

What they warned about

Four 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 and GLM 4.7 FlashX 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.
Lob
17%
12 of 71 labels negative · 11 of 12 models
“**When to proceed cautiously:** Lob may be suitable for small to mid‑volume, developer‑centric programs. For large enterprises, evaluate whether the cost and governance overhead outweigh the integration” GLM 4.7 FlashX, negative prompt
Sendoso
33%
15 of 45 labels negative · 10 of 12 models · 5 hard negative
“This platform has inflexible fund management where users cannot withdraw funds once added... customer support can be poor” Claude Haiku 4.5, negative prompt
PostGrid
21%
10 of 48 labels negative · 9 of 12 models · 2 hard negative
“Tracking issues: Users report faulty tracking features... not ideal for large enterprise-scale requirements with manual workflows” MiniMax M2.5, negative prompt
Postalytics
21%
7 of 33 labels negative · 7 of 12 models · 1 hard negative
“not truly enterprise-scale; maxes out well below what you need for thousands of users” DeepSeek V4 Flash, budget 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

80 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. 1159 links across 175 sites, every framing counted. Ranked by the number of answers carrying the site or page.

vendor site · Lob51 answers · 115 citations · 14 models
vendor site · Guideflow45 answers · 45 citations · 12 models
35 answers · 67 citations · 12 models
vendor site · Postalytics32 answers · 55 citations · 13 models
32 answers · 54 citations · 11 models
32 answers · 52 citations · 10 models
vendor site · PostGrid28 answers · 45 citations · 12 models
28 answers · 31 citations · 11 models
28 answers · 28 citations · 11 models
24 answers · 37 citations · 10 models
vendor site · CIENCE23 answers · 23 citations · 10 models
vendor site · RFP.ai21 answers · 41 citations · 10 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
Lob lob.com43%28927,1006,31955,936109
Sendoso sendoso.com13%3218,10010813,840107
PFL pfl.com9%8349,5003,4961,4488
Postalytics postalytics.com9%1901,000390,338282
PostGrid postgrid.com7%1681,60011196,042$7651203
Oppizi oppizi.com6%294801421,505
Reachdesk reachdesk.com4%2312,400251,2909
Postal postal.com4%16027,10064,09055,299
Quadient quadient.com
Quadient Inspire 2%, Quadient 2%
4%1521014131,433$8342
DirectMail.io directmail.io
PFL Direct Mail Platform 2%, DirectMail.io 0%
2%303003,7488

Google's top ten for the two searches hold 13 sites; 5 of them are among the sites the models cited here (g2.com, lob.com, postalytics.com, postgrid.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.
ShowHide
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 4.5Postalytics
Three alternativesLob, PostGrid, Sendoso
no first choiceChangedLob
Four alternativesInkit, PFL, PostGrid, Postalytics
Lob
Two alternativesPFL, PostGrid
no first choiceagainst: Lob, Sendoso
GPT-5.4 miniLob
Three alternativesPostalytics, Reachdesk, Sendoso
LobHeld
Two alternativesPFL Direct Mail Platform, PostGrid
Lob
Five alternativesPFL, PostGrid, Postalytics, Reachdesk, Sendoso
against: Click2Mail
Lob
One alternativePostGrid
against: Sendoso
no first choiceagainst: Lob, Postal, Postalytics, Sendoso
Gemini 3.5 FlashSendoso
Four alternativesB2BMail, Lob, PFL, Reachdesk
SendosoHeld
Three alternativesLob, PFL, Reachdesk
Lob, PostGrid
Five alternativesPFL, Poplar, PostPilot, Postalytics, Postie
against: Inkit
Lob, Postal
Two alternativesPostGrid, Postalytics
against: Reachdesk, Sendoso
no first choiceagainst: Click2Mail, LetterStream, Mailjoy, PRINTgenie, Postal, Reachdesk, Sendoso
Perplexity SonarReachdesk
One alternativePostalytics
LobChanged
Three alternativesClick2Mail, PFL, Postalytics
Lob
Four alternativesInkit, PFL, Postie, Quadient Inspire
against: Docsmit Mail, SphereMail
Postalytics
Two alternativesLob, PFL
no first choiceagainst: Click2Mail, Lob, PostGrid, Postal, RRD, Reachdesk, Sendoso
Grok 4.20Lob
Three alternativesPostGrid, Postal, Postalytics
LobHeld
Three alternativesPFL Direct Mail Platform, PostGrid, Sendoso
Lob
Five alternativesPFL, PostGrid, Postalytics, Reachdesk, Sendoso
Lob
One alternativeOppizi
against: Click2Mail, PostGrid, Postalytics, PostcardMania
no first choiceagainst: Click2Mail, Lob, PostGrid, PostPilot, Sendoso
Mistral SmallLob
Two alternativesPFL, Postalytics
PFLChanged
Two alternativesGunderson Direct, Tactic
Lob
Seven alternativesInkit, PFL, PostGrid, Postalytics, Postie, Reachdesk, Sendoso
Quadient Inspire
One alternativeOppizi
no first choiceagainst: Lob, PostGrid
DeepSeek V4 FlashPFL
Three alternativesLob, Postalytics, Reachdesk
LobChanged
Two alternativesPFL, Sendoso
Lob
Six alternativesCM.com, PFL, PostGrid, Postalytics, Reachdesk, Sendoso
Lob
One alternativePFL Direct Mail Platform
against: Postal, Postalytics, Quadient Inspire, Reachdesk, Rejoiner, Sendoso
no first choice
Three alternativesDirectMail.io, Lob, PostGrid
against: Stannp
against: Click2Mail, DirectMail2.0, Lob, PostGrid, Postie, Reachdesk, Sendoso, Snackmagic, Stannp, Swagmagic
Llama 4 MaverickReachdesk
Two alternativesLob, Quadient Inspire
no first choiceChangedLob, PFLno first choiceLob
Two alternativesDirectMail.io, PostGrid
nothing named
Qwen 3.7 FlashOppizi, Postalytics
Five alternativesCM.com, Lob, PostGrid, Printbox, Sendoso
QuadientChanged
Two alternativesLob, Swag.com
Lob
Four alternativesPFL Direct Mail Platform, PostGrid, Postie, Sendoso
Oppizi
Two alternativesLob, PostGrid
Lob, PostGrid
Two alternativesInkit, Sendoso
against: Maple, PostGrid, PostPilot, Sendoso, SimpliPost
Kimi K2Lob, PFL
Three alternativesPostalytics, Reachdesk, Sendoso
LobChanged
Three alternativesPFL, Postalytics, Sendoso
Lob
Six alternativesPFL, PostGrid, Postalytics, Quadient Inspire, Reachdesk, Sendoso
PostGrid
One alternativeLob
against: PFL, Postalytics
Lob
Three alternativesPostGrid, Postal, Sendoso
against: Boingnet, Docsmit, Lob, PFL, PostGrid, Sendoso
GLM 4.7 FlashXPostalytics, Sendoso
Three alternativesLob, Oppizi, PostGrid
LobChanged
Two alternativesQuadient Inspire, Sendoso
Lob
Four alternativesInkit, PostGrid, Postalytics, Sendoso
Lob
Two alternativesDirectMail.io, PostGrid
against: Oppizi
no first choiceagainst: Lob, PostGrid
MiniMax M2.5Sendoso
Three alternativesLob, PostGrid, Reachdesk
SendosoHeld
Four alternativesHubSpot Marketing Hub, Lob, PFL Direct Mail Platform, Postal
Sendoso
Four alternativesLob, PFL, PostGrid, Postalytics
Lob, PostGrid
One alternativeOppizi
against: Postalytics
Lob, PostGrid, Sendosoagainst: Alyce, Lob, PFL, PostGrid, Snackmagic, Stadium, 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 12:18yes97 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 10:25yes34 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-10-01 13:08yes1126 s
Direct recommendationPerplexity Sonarsonar2026-10-01 14:06yes183 s
Direct recommendationGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 13:21yes2410 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-10-01 07:32yes229 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 13:48yes1950 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 08:43yes51 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 11:05yes1448 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-10-01 14:07yes1730 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 12:00yes2138 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 10:06yes1744 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 12:47no04 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 08:24yes55 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-10-01 11:28yes1525 s
ParaphrasePerplexity Sonarsonar2026-10-01 07:25yes173 s
ParaphraseGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 09:12yes216 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-10-01 12:53yes54 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 12:01yes2347 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 10:04yes51 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 08:28yes1033 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-10-01 13:59yes2019 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 14:17yes948 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 08:51yes519 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 11:44yes1511 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 08:49yes59 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-10-01 07:31yes2231 s
ComparativePerplexity Sonarsonar2026-10-01 12:18yes176 s
ComparativeGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 11:33yes2310 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-10-01 11:53yes89 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 13:53yes2541 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 12:18yes52 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 10:02yes1759 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-10-01 07:28yes2233 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 13:20yes2226 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 08:43yes2536 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 08:12yes149 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 12:34yes511 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-10-01 11:37yes1731 s
Budget constrainedPerplexity Sonarsonar2026-10-01 14:01yes183 s
Budget constrainedGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 11:38yes199 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-10-01 12:01yes55 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 09:26yes2336 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 11:20yes51 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 13:38yes1245 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-10-01 12:42yes2557 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 08:42yes23118 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 09:38yes1660 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 10:31yes1812 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 10:03yes011 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-10-01 10:45no015 s
Scale constrainedPerplexity Sonarsonar2026-10-01 11:10yes197 s
Scale constrainedGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 10:25yes2014 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-10-01 10:50no06 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 09:20yes2255 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 08:19yes52 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 07:26yes940 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-10-01 07:46yes1832 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 08:42yes1443 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 07:27yes561 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-10-01 08:38yes168 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-10-01 13:22yes38 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-10-01 08:34yes1727 s
Negative framingPerplexity Sonarsonar2026-10-01 07:31yes173 s
Negative framingGrok 4.20spacexai/grok-4.1-fast-non-reasoning via vertex2026-10-01 13:48yes2210 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-10-01 09:26yes155 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-10-01 10:58yes2440 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-10-01 11:50yes53 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-10-01 12:38yes1527 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-10-01 12:20yes2424 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-10-01 14:00yes24201 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-10-01 12:55yes1522 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
B2BMail
Docsmit
Docsmit Mail
MailPro
Maple
Merch.co
PFL Direct Mail
PRINTgenie
QuickLink
Rejoiner
SimpliPost
SphereMail
Tactic
Discontinued, still offered
No shut-down product was recommended here.
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