On the best platform overall, Mailchimp comes first in 39 of 90 answers without web search and 6 of 36 with it, MailerLite in 26 of 90 and 18 of 36. A small firm's first tool moves the same way: one assistant without web search names Mailchimp in every answer, and with search on, in the 8 answers where it did search, it names MailerLite in 7, as the other two do.
Global
Ask AI for the best email platform and from memory it says Mailchimp. Let it search and it says MailerLite.
Measured without web search. The search run comes in the next edition.
The brands AI names first most often, plus any this finding is about.
| Brand | Named first | Named at all |
|---|---|---|
| Mailchimp | 82% | |
| MailerLite | 86% | |
| Klaviyo | 100% | |
| Kit | 77% | |
| ActiveCampaign | 74% | |
| Brevo | 59% |
90 answers across ChatGPT, Gemini and Claude together, October 2026. These are AI answers, not market shares. The assistants differ.
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| Brand | Named first | Named at all |
|---|---|---|
| Mailchimp | 54% | |
| MailerLite | 50% | |
| Klaviyo | 58% | |
| Substack | 18% | |
| ActiveCampaign | 39% | |
| Postmark | 14% | |
| Kit | 45% | |
| Brevo | 43% | |
| Beehiiv | 16% | |
| Customer.io | 11% | |
| Salesforce Marketing Cloud | 6% | |
| HubSpot | 28% | |
| Amazon SES | 9% | |
| SendGrid | 9% | |
| EmailOctopus | 3% | |
| Braze | 8% | |
| Mailgun | 5% | |
| Flodesk | <1% | |
| Omnisend | 20% | |
| Ghost | 9% | |
| Drip | 6% | |
| Shopify Email | 5% | |
| Iterable | 5% | |
| Moosend | 4% | |
| Buttondown | 4% | |
| Constant Contact | 3% | |
| Campaign Monitor | 2% | |
| GetResponse | 1% | |
| Mailjet | <1% | |
| AWeber | <1% | |
| Benchmark Email | <1% | |
| Loops | <1% | |
| Zoho Campaigns | <1% |
720 answers across ChatGPT, Gemini and Claude together, October 2026. These are AI answers, not market shares. The three assistants share a favorite on 4 of 8 questions.
| Brand | Named first | Named at all |
|---|---|---|
| MailerLite | 48% | |
| Klaviyo | 53% | |
| Mailchimp | 38% | |
| ActiveCampaign | 38% | |
| Brevo | 48% | |
| Substack | 16% | |
| Beehiiv | 27% | |
| Postmark | 6% | |
| Kit | 40% | |
| Customer.io | 9% | |
| Omnisend | 31% | |
| HubSpot | 24% | |
| Salesforce Marketing Cloud | 3% | |
| EmailOctopus | 10% | |
| Mailgun | 4% | |
| Flodesk | 2% | |
| Constant Contact | 10% | |
| Ghost | 9% | |
| Drip | 9% | |
| Braze | 6% | |
| Amazon SES | 5% | |
| Moosend | 5% | |
| Shopify Email | 4% | |
| Buttondown | 3% | |
| GetResponse | 3% | |
| SendGrid | 3% | |
| Mailjet | 2% | |
| Iterable | 2% | |
| Zoho Campaigns | 1% | |
| Benchmark Email | 1% | |
| Campaign Monitor | <1% | |
| Loops | <1% | |
| AWeber | <1% | |
| None of the tracked brands |
288 answers across ChatGPT, Gemini and Claude together, October 2026. These are AI answers, not market shares. The three assistants share a favorite on 3 of 8 questions.
Places count every brand AI names, so the numbers can jump. "=" is a tie. "–" means AI never names it first.
Klaviyo holds online stores with web search or without, a position no rival touches. Everywhere else the leader changes with the assistant and with the search. And when a company has outgrown its tool and asks what to switch to, about one answer in four names none of the tracked products. That moment is unclaimed.
MailchimpThe assistants differ.
MailerLiteAll three agree.
Answers vary from one ask to the next, and the apps can search the web and remember the person asking. That is why we ask each question 90 times without web search and 36 times with it.
MailchimpThe assistants differ.
MailerLiteThe assistants differ.
MailerLiteAll three agree.
BrevoThe assistants differ.
ActiveCampaignAll three agree.
ActiveCampaignAll three agree.
Is your company missing or measured under the wrong name? Tell us. We correct facts at any time. Results change only in the next edition, for everyone.
Edition 1, Q4 2026. Next edition: January 2027.
Eight buying questions per market, each asked in six wordings of ChatGPT, Gemini and Claude: five times without web search (720 answers per market, 14,400 in all) and twice with it (288 per market, 4,600 in all, in sixteen of the twenty markets so far). Measured 25 to 30 October 2026. Kesterley.
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