The AI Index · week 44 · Oct 30, 2026

Who AI recommends for
email marketing software.

Five buyer questions, asked the same way every week to ChatGPT, Claude and Gemini. 15 answers this week, every one kept. Read them all.

Brands named most often in email marketing software answers, week 44
Rank	Change since last week	Brand	AI share of answers	ChatGPT	Claude	Gemini	Weeks
1	·no previous week	Mailchimp	60%	40	100	40	1
2	·no previous week	ActiveCampaign	47%	40	60	40	1
2	·no previous week	Klaviyo	47%	40	60	40	1
4	·no previous week	Brevo	40%	60	40	20	1
5	·no previous week	HubSpot	33%	60	0	40	1
5	·no previous week	MailerLite	33%	20	40	40	1
7	·no previous week	HubSpot Marketing Hub	27%	0	60	20	1
8	·no previous week	Customer.io	20%	20	20	20	1
8	·no previous week	DKIM	20%	20	20	20	1
8	·no previous week	Kit	20%	40	20	0	1
8	·no previous week	Marketo Engage	20%	20	40	0	1

Put the badge on your site

Any brand ranked 1 to 10 this week can embed its badge. It links back to this chart, it updates with each week's run, and it stops working if the brand drops off the chart, so it never claims a rank the answers don't back up. Add ?theme=dark to the image address for the dark version.

#1 Mailchimp

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/mailchimp" alt="Recommended by AI: #1 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#2 ActiveCampaign

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/activecampaign" alt="Recommended by AI: #2 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#2 Klaviyo

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/klaviyo" alt="Recommended by AI: #2 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#4 Brevo

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/brevo" alt="Recommended by AI: #4 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#5 HubSpot

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/hubspot" alt="Recommended by AI: #5 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#5 MailerLite

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/mailerlite" alt="Recommended by AI: #5 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#7 HubSpot Marketing Hub

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/hubspotmarketinghub" alt="Recommended by AI: #7 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#8 Customer.io

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/customerio" alt="Recommended by AI: #8 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#8 DKIM

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/dkim" alt="Recommended by AI: #8 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#8 Kit

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/kit" alt="Recommended by AI: #8 for email marketing software, The AI Index, Oct 2026" height="60"></a>

#8 Marketo Engage

<a href="https://mentioned.at/index/email-marketing"><img src="https://mentioned.at/index/email-marketing/badge/marketoengage" alt="Recommended by AI: #8 for email marketing software, The AI Index, Oct 2026" height="60"></a>