Tonaily AI Visibility Index · August 2026
The Most Visible Email Marketing Platforms in AI Search
We asked 30 brand-blind Email marketing buying questions to OpenAI, Gemini, Claude and measured which brands appear most often in the answers.
- Updated
- August 2026
- Questions
- 30
- AI engines
- 3
- Answers analyzed
- 90
- Brands detected
- 38
Most visible Email marketing brands
Full ranking
38 brands detected across 90 AI answers. Sort by engine to see where the models disagree.
| Rank | Brand | Score | OpenAI | Gemini | Claude | Coverage | Change |
|---|---|---|---|---|---|---|---|
| 1 |  Mailchimp 60 answers | 57.9 | 62.1 #1 | 55.2 #1 | 56.4 #1 | 67% | . |
| 2 |  Klaviyo 53 answers | 49.4 | 49.2 #2 | 44.1 #3 | 54.8 #2 | 59% | . |
| 3 |  HubSpot 43 answers | 40.6 | 44.5 #3 | 35.7 #6 | 41.5 #5 | 48% | . |
| 4 |  ActiveCampaign 44 answers | 39.4 | 37.8 #4 | 36.3 #5 | 44.1 #3 | 49% | . |
| 5 |  ConvertKit 44 answers | 39.0 | 29.8 #6 | 45.6 #2 | 41.6 #4 | 49% | . |
| 6 |  Brevo 33 answers | 29.2 | 33.0 #5 | 23.2 #7 | 31.3 #6 | 37% | . |
| 7 |  Mailerlite 22 answers | 19.5 | 21.1 #7 | 37.3 #4 | . | 24% | . |
| 8 |  Beehiiv 14 answers | 13.1 | 11.0 #13 | 19.6 #8 | 8.8 #14 | 16% | . |
| 9 |  Substack 13 answers | 12.2 | 8.5 #15 | 11.8 #12 | 16.2 #7 | 14% | . |
| 10 |  Postmark 12 answers | 11.3 | 12.9 #10 | 13.3 #11 | 7.6 #18 | 13% | . |
| 11 |  Amazon SES 13 answers | 11.2 | 10.6 #14 | 15.2 #9 | 7.8 #15 | 14% | . |
| 12 |  SendGrid 11 answers | 10.8 | 15.0 #8 | 2.8 #22 | 14.7 #8 | 12% | . |
| 13 |  Mailgun 11 answers | 9.8 | 13.0 #9 | 5.2 #17 | 11.1 #11 | 12% | . |
| 14 |  Constant Contact 10 answers | 8.6 | 7.5 #20 | 5.4 #15 | 12.9 #10 | 11% | . |
| 15 |  Zoho Campaigns 8 answers | 8.4 | 12.4 #11 | 2.8 #23 | 10.0 #13 | 9% | . |
| 16 |  Customer.io 9 answers | 8.4 | 11.6 #12 | 13.7 #10 | . | 10% | . |
| 17 |  Omnisend 9 answers | 7.9 | 5.4 #21 | 5.3 #16 | 12.9 #9 | 10% | . |
| 18 |  Salesforce Marketing Cloud 7 answers | 6.1 | 7.8 #16 | 2.8 #21 | 7.8 #16 | 8% | . |
| 19 |  Segment 7 answers | 6.1 | 5.1 #23 | 8.1 #14 | 5.2 #21 | 8% | . |
| 20 |  Braze 6 answers | 5.1 | 7.6 #17 | . | 7.7 #17 | 7% | . |
| 21 |  Yahoo 5 answers | 5.0 | 3.3 #27 | 5.0 #20 | 6.7 #20 | 6% | . |
| 22 |  Adobe Marketo Engage 5 answers | 4.5 | 2.8 #28 | . | 10.6 #12 | 6% | . |
| 23 |  Iterable 5 answers | 4.2 | 5.0 #25 | . | 7.6 #19 | 6% | . |
| 24 |  Lemlist 4 answers | 3.8 | 5.3 #22 | 2.7 #27 | 3.3 #23 | 4% | . |
| 25 |  GetResponse 4 answers | 3.3 | 2.4 #33 | 2.7 #24 | 4.9 #22 | 4% | . |
| 26 |  EmailOctopus 4 answers | 3.3 | . | 9.9 #13 | . | 4% | . |
| 27 |  Moosend 3 answers | 2.5 | 7.5 #18 | . | . | 3% | . |
| 28 |  SparkPost 3 answers | 2.5 | 7.5 #19 | . | . | 3% | . |
| 29 |  Smartlead 2 answers | 2.0 | 3.3 #26 | 2.6 #29 | . | 2% | . |
| 30 |  Mailshake 2 answers | 1.8 | 2.7 #29 | . | 2.8 #24 | 2% | . |
| 31 |  Resend 2 answers | 1.7 | . | 5.2 #18 | . | 2% | . |
| 32 |  Flodesk 2 answers | 1.7 | . | 5.2 #19 | . | 2% | . |
| 33 |  Intercom 2 answers | 1.7 | . | 2.7 #26 | 2.5 #25 | 2% | . |
| 34 |  Apollo.io 2 answers | 1.7 | 2.5 #30 | 2.6 #28 | . | 2% | . |
| 35 |  Reply.io 2 answers | 1.7 | 5.0 #24 | . | . | 2% | . |
| 36 |  Campaign Monitor 2 answers | 1.6 | 2.5 #31 | . | 2.5 #26 | 2% | . |
| 37 |  Buttondown 2 answers | 1.6 | 2.4 #32 | . | 2.4 #27 | 2% | . |
| 38 |  Instantly 1 answers | 0.9 | . | 2.7 #25 | . | 1% | . |
What the data shows
Every figure below is computed from the dataset on this page.
- Mailchimp leads the Email marketing ranking on all 3 AI engines, with a global visibility score of 57.9.
- The top 5 Email marketing brands capture 51% of all brand mentions across the 38 brands detected.
- SendGrid ranks #8 on OpenAI but #22 on Gemini, the largest engine disagreement in the top 15.
- Mailchimp is the first brand named in 24% of AI answers, more often than any other Email marketing brand.
- 1 of the 38 Email marketing brands detected appear in a single AI answer, showing how concentrated AI recommendations remain.
Engine by engine
Top 10 per engine. The same market, read by four different models.
OpenAI
gpt-5.4-mini
- 1 Mailchimp 62.1
- 2 Klaviyo 49.2
- 3 HubSpot 44.5
- 4 ActiveCampaign 37.8
- 5 Brevo 33.0
- 6 ConvertKit 29.8
- 7 Mailerlite 21.1
- 8 SendGrid 15.0
- 9 Mailgun 13.0
- 10 Postmark 12.9
Gemini
gemini-3-flash-preview
- 1 Mailchimp 55.2
- 2 ConvertKit 45.6
- 3 Klaviyo 44.1
- 4 Mailerlite 37.3
- 5 ActiveCampaign 36.3
- 6 HubSpot 35.7
- 7 Brevo 23.2
- 8 Beehiiv 19.6
- 9 Amazon SES 15.2
- 10 Customer.io 13.7
Claude
claude-haiku-4-5
- 1 Mailchimp 56.4
- 2 Klaviyo 54.8
- 3 ActiveCampaign 44.1
- 4 ConvertKit 41.6
- 5 HubSpot 41.5
- 6 Brevo 31.3
- 7 Substack 16.2
- 8 SendGrid 14.7
- 9 Omnisend 12.9
- 10 Constant Contact 12.9
The 30 questions we asked
None of them names a brand. Every engine received the question exactly as written, with no formatting instruction.
- 01 What are the best email marketing platforms?
- 02 Which email marketing tools would you recommend for a business?
- 03 What are the leading email marketing services today?
- 04 Which email platforms are worth considering for a B2B company?
- 05 What tools should I use to send newsletters to my audience?
- 06 What are the best options for marketing automation by email?
- 07 Which email platform is best for ecommerce campaigns?
- 08 What email tool works best for B2B SaaS lifecycle emails?
- 09 Which platform is best for running a paid newsletter?
- 10 What tool should I use for transactional emails?
- 11 Which email platform is best for cold outbound campaigns?
- 12 What tool is best for behavior-based email automation?
- 13 What email marketing tool should a solo creator use?
- 14 Which email platform is best for a 10-person startup?
- 15 What email marketing software suits a 200-person company?
- 16 Which email tool works well for a small marketing team with no developer?
- 17 What email platform is appropriate for an enterprise with strict compliance needs?
- 18 Which email platform should I use if my current one is too expensive as my list grows?
- 19 What email tool is easiest to set up without technical skills?
- 20 Which email platform should I choose if my deliverability is poor?
- 21 What email software should I use if my current automation builder is too limited?
- 22 Which email tool avoids paying twice for the same contacts?
- 23 Which email platform has the best automation workflows?
- 24 Which email tool offers the best segmentation capabilities?
- 25 What email platform has the best API and integrations?
- 26 Which email software provides the best analytics and reporting?
- 27 Which email marketing platform offers the best value for money?
- 28 Which email tool is easiest to adopt for a small team?
- 29 Which email platform has the best deliverability reputation?
- 30 Which email software provides the best balance between price and features?
Your brand isn't where you want it to be?
The Index is a public snapshot of one market. Tonaily tracks your own brand and your competitors across AI answers, month after month, and shows which questions you win.
Limits. AI responses are dynamic and may vary over time. The Index measures visibility in generated answers. It does not measure market share, product quality or revenue. This is not a ranking of the objectively best Email marketing, but of the brands most visible in this panel of AI-generated answers.
Frequently asked
What is AI visibility?
AI visibility measures how often a brand appears in answers generated by AI engines when someone asks a buying question. It is not the same as search rankings: an AI answer names a handful of brands rather than listing ten blue links.
How is this Email marketing ranking calculated?
Each brand gets a score per engine: 100 × (0.70 × Coverage + 0.30 × MRR), where Coverage is the share of answers mentioning the brand and MRR reflects how early it is mentioned. The global score is the average of the 3 engine scores, each weighted equally.
Which AI engines are included?
OpenAI (gpt-5.4-mini), Gemini (gemini-3-flash-preview), Claude (claude-haiku-4-5). All are queried through the Mammouth API with fixed model IDs so the edition stays reproducible.
How often is the ranking updated?
Monthly. Each refresh creates a new snapshot; previous editions are kept so scores can be compared over time.
Does a higher score mean the product is better?
No. The Index measures visibility in AI-generated answers. It does not measure market share, product quality, customer satisfaction or revenue.
Can a company improve its AI visibility?
Yes, but not instantly. AI answers draw on the content, comparisons and sources models can access. Improving coverage means being present and clearly described in the places those models read.
Cite this dataset
This ranking is free to cite and share. Attribution lets readers trace a figure back to its source.
Tonaily. "Email Marketing AI Visibility Index, August 2026." https://tonaily.com/ai-visibility-index/email-marketing/