The most visible email marketing tools, October 2026

October 2026 · 12 questions asked in English, worldwide · ChatGPT, Google AI Overviews, Gemini and Google AI Mode · 96 answers read

Most cited source

reddit.com

32citations

From Google AI Mode, Gemini, Google AI Overviews and ChatGPT

Where engines disagree most

Mailchimp

1/4engines put it in their top three

Top three on ChatGPT, not on Google AI Mode, Gemini and Google AI Overviews

Brands

Rank Brand Heralded Score Mentioned Recommended By engine Mentioned by Change
1 ActiveCampaign US 72 , range 60–78 64% 46% First reading
2 MailerLite LT 71 , range 59–77 61% 46% First reading
3 Klaviyo US 70 , range 56–76 57% 47% First reading
4 Brevo FR 62 , range 49–72 57% 34% First reading
5 Mailchimp US 48 , range 41–61 47% 25% First reading
6 Kit US 48 , range 40–61 41% 30% First reading
7 Omnisend LT 47 , range 40–60 39% 31% First reading
8 beehiiv US 35 , range 29–43 26% 15% First reading
9 Constant Contact US 32 , range 25–40 26% 8% First reading
10 HubSpot Marketing Hub US 21 , range 14–32 9% 8% First reading

“=” marks brands whose score ranges overlap, so the test cannot separate them. Every brand named in at least three answers is ranked. By engine has one dot per engine (ChatGPT, Google AI Overviews, Gemini and Google AI Mode), darker the more often it names the brand.

Most cited sources

Rank Source Type Cited in Engines Pages cited Brands its pages mention
1 reddit.com Community 25.0% 4 of 4 15 24
2 omidsaffari.com Community 2.1% 1 of 4 1 0
3 quora.com Community 1.0% 1 of 4 1 0

The questions, and who wins each

QuestionLanguageWins it
email marketing software with the best support English ActiveCampaign and Constant Contact, tied
which email marketing software do experts recommend English ActiveCampaign, Kit and Klaviyo, tied

Each engine's top three

Method

Each month Heralded asks every engine the same buyer questions, twice each, and reads every answer. An answer counts 0 for a brand it leaves out, 50 for a brand it names and 100 for a brand it recommends, and the Heralded Score is built from those. A brand named in at least three answers gets a score and a place.

How the leaderboards are measured