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

Email marketing platforms for enterprise buyers

Asked as “email marketing platform”, and as “email marketing tool”, on behalf of an enterprise B2B company. 48 first choices recorded across the direct, paraphrase, budget and scale prompts, twelve models each.
Standing
Contested
23% 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
01Adobe Marketo Engage23%9%34accepted challenger
02HubSpot Marketing Hub21%19%59accepted challenger
03Salesforce Marketing Cloud19%15%48accepted challenger
04Brevo12%29%24criticized challenger
05ActiveCampaign4%11%37accepted challenger
06Braze2%8%24accepted challenger
07Adobe Campaign2%12%24accepted challenger
08Oracle Eloqua2%24%17accepted challenger
Show the five products at 0%, ordered by negative rate
13Mailchimp0%88%16criticized challenger
12Constant Contact0%83%12criticized challenger
11Klaviyo0%40%25criticized challenger
10Iterable0%10%20accepted 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 →
01
02
03
04
05
06
07
08
09
10
11
12
13
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative40%
Key
01Adobe Marketo Engage23%
02HubSpot Marketing Hub21%
03Salesforce Marketing Cloud19%
04Brevo12%
05ActiveCampaign4%
06Braze2%
07Adobe Campaign2%
08Oracle Eloqua2%
09Salesforce Marketing Cloud Account Engagement0%
10Iterable0%
11Klaviyo0%
12Constant Contact0%
13Mailchimp0%

02What they warned about

Six of twelve models held their first choice under the paraphrase. GPT-5.4 mini, Mistral Small, Llama 4 Maverick, Qwen 3.7 Flash, 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.
Mailchimp
88%
14 of 16 labels negative · 10 of 12 models · 10 hard negative
“Mid-Market Platforms (Avoid for True Enterprise Scale)... **Mailchimp**, **ActiveCampaign**, and **Omnisend** are excellent for startups ... frequently fail enterprise requirements” Qwen 3.7 Flash, negative prompt
Constant Contact
83%
10 of 12 labels negative · 9 of 12 models · 6 hard negative
“**Constant Contact**: Small-business oriented... Best for infrequent low-volume sends, not enterprise.” Grok 4.1 Fast, negative prompt
Klaviyo
40%
10 of 25 labels negative · 8 of 12 models · 5 hard negative
“**Best for**: D2C e-commerce brands on Shopify/WooCommerce; avoid for B2B enterprises” Kimi K2, negative prompt
HubSpot Marketing Hub
19%
11 of 59 labels negative · 8 of 12 models · 3 hard negative
“HubSpot Marketing Hub Professional/Enterprise (not recommended for pure email focus; expensive, feature-gated, and contact-based billing)” 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

22 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. 5 of those lists are Google grounding redirects that name no site and are left out of the counts. 205 links across 103 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.

8 answers · 12 citations · 2 models
vendor site · Mailtrap8 answers · 11 citations · 2 models
7 answers · 9 citations · 2 models
vendor site · Sequenzy6 answers · 9 citations · 2 models
vendor site · Brevo6 answers · 6 citations · 2 models
vendor site · Klaviyo5 answers · 5 citations · 1 model
vendor site · ZoomInfo5 answers · 5 citations · 2 models
vendor site · Attentive4 answers · 4 citations · 2 models
vendor site · Mailmodo4 answers · 4 citations · 2 models
4 answers · 4 citations · 1 model
vendor site · Campaign Monitor3 answers · 4 citations · 1 model
vendor site · Constant Contact3 answers · 4 citations · 2 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 email marketing platform for an enterprise B2B company?”Paraphrase“Which email marketing tool would you recommend to a large B2B company with thousands of employees?”Comparative“What are the top enterprise-grade email marketing platforms and how do they differ?”Budget-constrained“What is the best email marketing 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 an email marketing platform. What should we look at?”Negative“Which email marketing platforms should a large enterprise avoid or be cautious about?”
Claude Haiku 4.5Adobe Marketo Engage
Three alternativesActiveCampaign, HubSpot Marketing Hub, ZoomInfo Marketing
Adobe Marketo EngageHeld
One alternativeHubSpot Marketing Hub
ActiveCampaign
Five alternativesAdobe Campaign, HubSpot Marketing Hub, Klaviyo, Salesforce Marketing Cloud, UniOne
against: Adobe Marketo Engage
Brevo, SendX
One alternativeFlodesk
against: ActiveCampaign, Klaviyo
no first choiceagainst: Constant Contact
GPT-5.4 miniAdobe Marketo Engage
Four alternativesHubSpot Marketing Hub, Oracle Eloqua, Salesforce Marketing Cloud, Salesforce Marketing Cloud Account Engagement
Salesforce Marketing CloudChanged
Two alternativesHubSpot Marketing Hub, Oracle Fusion Marketing
Salesforce Marketing Cloud
Two alternativesAdobe Marketo Engage, Oracle Responsys
HubSpot Marketing Hub
One alternativeSendGrid
no first choiceagainst: Salesforce Marketing Cloud, Salesforce core email features
Gemini 3.5 FlashAdobe Marketo Engage
Four alternativesActiveCampaign, HubSpot Marketing Hub, Oracle Eloqua, Salesforce Marketing Cloud Account Engagement
Adobe Marketo EngageHeld
Four alternativesActiveCampaign, HubSpot Marketing Hub, Oracle Eloqua, Salesforce Marketing Cloud Account Engagement
no first choice
Six alternativesAdobe Marketo Engage, Braze, HubSpot Marketing Hub, Iterable, Klaviyo, Salesforce Marketing Cloud
Brevo, Emma
Two alternativesGoHighLevel, Interspire Email Marketer
against: HubSpot Marketing Hub, Salesforce Marketing Cloud
no first choiceagainst: AWeber, Beehiiv, Constant Contact, Flodesk, Keap, Kit, Mailchimp
Perplexity SonarHubSpot Marketing Hub
Two alternativesAdobe Marketo Engage, Salesforce Marketing Cloud
HubSpot Marketing HubHeld
Two alternativesAdobe Marketo Engage, Salesforce Marketing Cloud
HubSpot Marketing Hub
Nine alternativesActiveCampaign, Adobe Campaign, Adobe Marketo Engage, Braze, Brevo, Iterable, Klaviyo, Oracle Eloqua, Salesforce Marketing Cloud
Brevo
One alternativeActiveCampaign
against: HubSpot Marketing Hub
no first choiceagainst: Brevo, Constant Contact, GetResponse, Mailchimp, MailerLite, Omnisend, Oracle Eloqua
Grok 4.1 FastHubSpot Marketing Hub
Two alternativesAdobe Marketo Engage, Salesforce Marketing Cloud Account Engagement
HubSpot Marketing HubHeld
Three alternativesActiveCampaign, Adobe Marketo Engage, Salesforce Marketing Cloud Account Engagement
Salesforce Marketing Cloud
Six alternativesActiveCampaign, Adobe Campaign, Braze, HubSpot Marketing Hub, Iterable, Klaviyo
ActiveCampaignagainst: Amazon SES, Brevo, HubSpot Marketing Hub, Klaviyo, Mailchimp, SendGridno first choice
Four alternativesActiveCampaign, Braze, HubSpot Marketing Hub, Salesforce Marketing Cloud
against: Benchmark Email, Constant Contact, GetResponse, Klaviyo, Mailchimp, MailerLite, SendPulse
Mistral SmallHubSpot Marketing Hub
Four alternativesActiveCampaign, Adobe Campaign, Oracle Eloqua, Salesforce Marketing Cloud
against: Brevo, Constant Contact, Klaviyo, Mailchimp
Adobe Marketo Engage, Salesforce Marketing CloudChanged
One alternativeHubSpot Marketing Hub
Salesforce Marketing Cloud
Six alternativesActiveCampaign, Adobe Campaign, Braze, HubSpot Marketing Hub, Klaviyo, Oracle Eloqua
Brevo
One alternativeActiveCampaign
against: Adobe Campaign, HubSpot Marketing Hub, Salesforce Marketing Cloud
no first choiceagainst: Amazon SES, Brevo, Campaign Monitor, Constant Contact, Mailchimp, Mailgun, iContact
DeepSeek V4 FlashAdobe Marketo Engage
Two alternativesHubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement
against: Oracle Eloqua
Adobe Marketo EngageHeld
One alternativeSalesforce Marketing Cloud Account Engagement
against: HubSpot Marketing Hub, Oracle Eloqua
no first choiceagainst: Adobe CampaignBrevo
One alternativeActiveCampaign
against: Adobe Marketo Engage, Braze, HubSpot Marketing Hub, Mailchimp, Salesforce Marketing Cloud
HubSpot Marketing Hub
Five alternativesAdobe Campaign, Adobe Marketo Engage, Braze, Iterable, Salesforce Marketing Cloud
against: Klaviyo
against: AWeber, Brevo, Campaign Monitor, Constant Contact, GetResponse, Kit, Klaviyo, Mailchimp, MailerLite
Llama 4 Maverickno first choiceActiveCampaign, Brevo, HubSpot Marketing HubChangedno first choiceno first choiceno first choiceagainst: AWeber, ActiveCampaign, Benchmark Email, Campaigner, Constant Contact, Drip, Email Octopus, GetResponse, Kit, Klaviyo, Mailchimp, Mailjet, Mailmodo, Salesforce Marketing Cloud, SendGrid
Qwen 3.7 FlashAdobe Marketo Engage, Salesforce Marketing Cloud
Three alternativesActiveCampaign, HubSpot Marketing Hub, Oracle Eloqua
Salesforce Marketing CloudChanged
Two alternativesAdobe Campaign Standard / On-Premise, HubSpot Marketing Hub
no first choiceMailerLite, Moosend
Four alternativesAdobe Marketo Engage, Amazon Pinpoint, Salesforce Marketing Cloud, SendGrid
Salesforce Marketing Cloud
Five alternativesAdobe Campaign / Experience Platform, Adobe Marketo Engage, Braze, HubSpot Marketing Hub, Oracle Eloqua
against: ActiveCampaign, Campaign Monitor, Iterable, Klaviyo, Mailchimp, Postmark, Resend, SendGrid
against: ActiveCampaign, Adobe Marketo Engage, Mailchimp, Omnisend, Salesforce Marketing Cloud
Kimi K2Adobe Marketo Engage
Two alternativesHubSpot Marketing Hub, Salesforce Marketing Cloud Account Engagement
Adobe Marketo EngageHeld
Two alternativesOracle Eloqua, Salesforce Marketing Cloud Account Engagement
against: HubSpot Marketing Hub
ActiveCampaign
Six alternativesAdobe Campaign / Adobe Marketing Cloud, Adobe Marketo Engage, Braze, HubSpot Marketing Hub, Klaviyo, Salesforce Marketing Cloud
MailerLite
Two alternativesBrevo, Customer.io
against: Adobe Campaign, Braze, Flodesk, HubSpot Marketing Hub, Iterable, Oracle Eloqua, Salesforce Marketing Cloud
Adobe Campaign, HubSpot Marketing Hub, Salesforce Marketing Cloud
Two alternativesBraze, Iterable
against: Brevo, Constant Contact, Customer.io, HubSpot Marketing Hub, Klaviyo, Mailchimp
GLM 4.7 FlashXno first choice
Six alternativesAdobe Marketo Engage, Braze, HubSpot Marketing Hub, Microsoft Dynamics 365 Marketing, Oracle Eloqua, Salesforce Marketing Cloud Account Engagement
Salesforce Marketing CloudChanged
Three alternativesAdobe Marketo Engage, HubSpot Marketing Hub, Oracle Eloqua
HubSpot Marketing Hub
Five alternativesActiveCampaign, Adobe Campaign, Brevo, Omnisend, Salesforce Marketing Cloud
HubSpot Marketing Hub
Three alternativesAdobe Marketo Engage, Iterable, Salesforce Marketing Cloud Account Engagement
against: Klaviyo
no first choiceagainst: Bluehost, GMass, Google Workspace, Hostgator, HubSpot Marketing Hub, Mailchimp, Microsoft 365, SiteGround
MiniMax M2.5HubSpot Email Marketing, Salesforce Marketing Cloud
Two alternativesSAP Emarsys, Salesforce Marketing Cloud Account Engagement
Oracle Eloqua, Salesforce Marketing CloudChanged
One alternativeHubSpot Marketing Hub
SAP Emarsys, Salesforce Marketing Cloud
Five alternativesAdobe Marketo Engage, Braze, Iterable, Klaviyo, Oracle Responsys
Beehiiv
Four alternativesActiveCampaign, Adobe Campaign, Brevo, Salesforce Marketing Cloud
against: HubSpot Marketing Hub
Braze
Three alternativesActiveCampaign, HubSpot Marketing Hub, Salesforce Marketing Cloud
against: AWeber, Benchmark Email, Brevo, Constant Contact, Drip, GetResponse, Mailchimp, Mailjet, Omnisend, SendGrid
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 23:41yes77 s
Direct recommendationGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:18yes35 s
Direct recommendationGemini 3.5 Flashgemini-3.5-flash2026-09-15 02:56yes1120 s
Direct recommendationPerplexity Sonarsonar2026-09-14 23:11yes204 s
Direct recommendationGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:37yes07 s
Direct recommendationMistral Smallmistral/mistral-small via mistral2026-09-14 23:31yes09 s
Direct recommendationDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 04:22yes027 s
Direct recommendationLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 00:11yes02 s
Direct recommendationQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-14 23:58no030 s
Direct recommendationKimi K2moonshotai/kimi-k2 via novita2026-09-15 05:03yes034 s
Direct recommendationGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 00:05yes022 s
Direct recommendationMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 03:32yes016 s
ParaphraseClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 00:25yes67 s
ParaphraseGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-14 23:18yes35 s
ParaphraseGemini 3.5 Flashgemini-3.5-flash2026-09-15 05:07yes1225 s
ParaphrasePerplexity Sonarsonar2026-09-15 03:15yes2018 s
ParaphraseGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 03:24yes07 s
ParaphraseMistral Smallmistral/mistral-small via mistral2026-09-15 02:35yes07 s
ParaphraseDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 00:11yes042 s
ParaphraseLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 05:01yes02 s
ParaphraseQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 01:33yes017 s
ParaphraseKimi K2moonshotai/kimi-k2 via novita2026-09-14 23:26yes025 s
ParaphraseGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 03:01yes0108 s
ParaphraseMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-14 23:33yes023 s
ComparativeClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 04:18yes68 s
ComparativeGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:40yes47 s
ComparativeGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:12yes1931 s
ComparativePerplexity Sonarsonar2026-09-15 02:32yes208 s
ComparativeGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:39yes07 s
ComparativeMistral Smallmistral/mistral-small via mistral2026-09-15 04:03yes013 s
ComparativeDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 03:06yes050 s
ComparativeLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 01:05yes02 s
ComparativeQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 04:29yes032 s
ComparativeKimi K2moonshotai/kimi-k2 via novita2026-09-15 03:40yes073 s
ComparativeGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:16yes0172 s
ComparativeMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 02:16yes021 s
Budget constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 03:31yes198 s
Budget constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 01:38yes25 s
Budget constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 01:47yes1332 s
Budget constrainedPerplexity Sonarsonar2026-09-15 03:48yes204 s
Budget constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 02:29yes09 s
Budget constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 04:46yes07 s
Budget constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-15 02:30yes035 s
Budget constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 04:47yes02 s
Budget constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 01:10yes069 s
Budget constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 03:08yes058 s
Budget constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 02:02yes093 s
Budget constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 00:10yes033 s
Scale constrainedClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 01:28yes1612 s
Scale constrainedGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 04:39no013 s
Scale constrainedGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:27no016 s
Scale constrainedPerplexity Sonarsonar2026-09-15 00:19yes2010 s
Scale constrainedGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-15 01:52yes010 s
Scale constrainedMistral Smallmistral/mistral-small via mistral2026-09-15 02:22no011 s
Scale constrainedDeepSeek V4 Flashdeepseek/deepseek-v4-flash via fireworks2026-09-15 03:48yes029 s
Scale constrainedLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-15 02:14yes02 s
Scale constrainedQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:33yes029 s
Scale constrainedKimi K2moonshotai/kimi-k2 via novita2026-09-15 03:42yes055 s
Scale constrainedGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 00:30yes092 s
Scale constrainedMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 03:55yes017 s
Negative framingClaude Haiku 4.5claude-haiku-4-5-202510012026-09-15 04:26yes1612 s
Negative framingGPT-5.4 minigpt-5.4-mini-2026-03-172026-09-15 03:02yes34 s
Negative framingGemini 3.5 Flashgemini-3.5-flash2026-09-15 04:57yes822 s
Negative framingPerplexity Sonarsonar2026-09-15 04:15yes207 s
Negative framingGrok 4.1 Fastspacexai/grok-4.1-fast-non-reasoning via vertex2026-09-14 23:32yes09 s
Negative framingMistral Smallmistral/mistral-small via mistral2026-09-15 02:08yes013 s
Negative framingDeepSeek V4 Flashdeepseek/deepseek-v4-flash via deepinfra2026-09-14 23:22yes044 s
Negative framingLlama 4 Maverickmeta/llama-4-maverick via bedrock2026-09-14 23:52yes02 s
Negative framingQwen 3.7 Flashalibaba/qwen3.7-flash via alibaba2026-09-15 00:54yes067 s
Negative framingKimi K2moonshotai/kimi-k2 via novita2026-09-15 02:38yes055 s
Negative framingGLM 4.7 FlashXzai/glm-4.7-flashx via zai2026-09-15 04:50yes044 s
Negative framingMiniMax M2.5minimax/minimax-m2.5 via minimax2026-09-15 04:24yes028 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
Adobe read as Adobe Campaign
HubSpot read as HubSpot Marketing Hub
HubSpot (Enterprise Tier) read as HubSpot Marketing Hub
HubSpot (Marketing Hub Enterprise) read as HubSpot Marketing Hub
Unresolved, counted raw
Adobe Campaign / Adobe Marketing Cloud
Adobe Campaign / Experience Platform
Adobe Campaign Standard / On-Premise
Bluehost
Evox (WorksBuddy)
Hostgator
HubSpot Email Marketing
IBM Watson Campaign Automation
Interspire Email Marketer
Oracle Fusion Marketing
Salesforce core email features
SiteGround
UniOne
iContact
Discontinued, still offered
No shut-down product was recommended here.
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