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Email and newsletters

What's the best email tool for B2B SaaS onboarding emails?

Named most often right now: Customer.io (98%), ActiveCampaign (60%), Intercom (50%).

Cubsy Same rule as the front board. Often is a share of runs, not a place in line. Is AI picking you? Tap me for a free scan →

Brands

  • ChatGPT 20 runs
  • Gemini 20 runs
  • Google AI Mode 20 runs
  1. Customer.io Often named 98% of runs 91% to 100% · 60 runs GPT 100%Gem 100%AI 95%
  2. ActiveCampaign Often named 60% of runs 47% to 71% · 60 runs GPT 0%Gem 100%AI 80%
  3. Intercom In the mix 50% of runs 38% to 62% · 60 runs GPT 95%Gem 25%AI 30%
  4. Loops In the mix 43% of runs 32% to 56% · 60 runs GPT 90%Gem 10%AI 30%
  5. Mailchimp Long shot 15% of runs 8% to 26% · 60 runs GPT 0%Gem 25%AI 20%
  6. MailerLite Rarely named 13% of runs 7% to 24% · 60 runs GPT 0%Gem 20%AI 20%
  7. Brevo Rarely named 5% of runs 2% to 14% · 60 runs GPT 0%Gem 10%AI 5%
  8. Instantly Rarely named 5% of runs 2% to 14% · 60 runs GPT 0%Gem 15%AI 0%
  9. Kit Rarely named 2% of runs 0% to 9% · 60 runs GPT 0%Gem 5%AI 0%
  10. Klaviyo Rarely named 2% of runs 0% to 9% · 60 runs GPT 0%Gem 0%AI 5%

More than one model name was recorded in this window: gemini:Flash-Lite, gemini:3.5 Flash-Lite.

Sorted by share of runs. Not a rank.

Cited

  1. 21 Best Email Tools for SaaS Onboarding (2026) | Sequenzy sequenzy.com · other · cited in 17% of stored runs · Google AI Mode All from sequenzy.com
  2. 7 Best SaaS Email Marketing Tools for 2026 | MigmaAI migma.ai · other · cited in 13% of stored runs · Google AI Mode All from migma.ai
  3. Best AI Email Tools for SaaS in 2026 (Ranked) | OneAway oneaway.io · other · cited in 12% of stored runs · Google AI Mode All from oneaway.io
  4. 9 Best Email Newsletter Platforms for SaaS Teams viasocket.com · other · cited in 8% of stored runs · Google AI Mode All from viasocket.com
  5. Best Email Marketing Tool for SaaS Onboarding smtpbd.com · other · cited in 7% of stored runs · Google AI Mode All from smtpbd.com
  6. 21 Best Email Tools for SaaS Onboarding (2026) sequenzy.com · listicle · cited in 5% of stored runs · ChatGPT All from sequenzy.com
  7. Best Email Nurturing Tools for SaaS Onboarding (2026) emailnurturingtools.com · listicle · cited in 5% of stored runs · ChatGPT All from emailnurturingtools.com
  8. Best Email Platforms for SaaS Onboarding in 2026 saasemailplatforms.com · listicle · cited in 5% of stored runs · ChatGPT All from saasemailplatforms.com
  9. Any Good Email Marketing Companies for B2B SaaS? - Reddit reddit.com · reddit · cited in 5% of stored runs · Google AI Mode All from reddit.com
  10. Onboarding Campaign docs.customer.io · other · cited in 3% of stored runs · ChatGPT All from docs.customer.io
  11. Triggers, filters, and frequencies docs.customer.io · other · cited in 3% of stored runs · ChatGPT All from docs.customer.io
  12. Customer.io and Userlist Integration userlist.com · other · cited in 3% of stored runs · Google AI Mode All from userlist.com
  13. Customer.io Alternatives for SaaS: 5 Compared 2026 ustechautomations.com · other · cited in 2% of stored runs · Google AI Mode All from ustechautomations.com
  14. docs.customer.io docs.customer.io · other · cited in 2% of stored runs · ChatGPT All from docs.customer.io
  15. ActiveCampaign vs Customer.io: Best Pick 2026 bestmarketingautomationtools.com · other · cited in 2% of stored runs · Google AI Mode All from bestmarketingautomationtools.com
  16. Engagement beyond just support - Try Customer.io try.customer.io · other · cited in 2% of stored runs · Google AI Mode All from try.customer.io
  17. Journeys customer.io · vendor · cited in 2% of stored runs · ChatGPT All from customer.io
  18. Best Lifecycle Email Software for SaaS Companies saas-expert.com · listicle · cited in 2% of stored runs · ChatGPT All from saas-expert.com
  19. Onboarding automation docs.customer.io · other · cited in 2% of stored runs · ChatGPT All from docs.customer.io
  20. Userlist vs Customer.io: B2B Specialist vs Enterprise Power emailbroadcastservices.com · other · cited in 2% of stored runs · Google AI Mode All from emailbroadcastservices.com

These are pages the engines cited for this question. Getting listed means being a source a buyer would trust, not planting fake reviews.

From the answers

About this question

What's the best email tool for B2B SaaS onboarding emails?

Over the last four weeks, AI answers to this question named Customer.io (59 of 60 answers), ActiveCampaign (36 of 60 answers) and Intercom (30 of 60 answers) most often. That is how often a name shows up, not a ranking of quality.

How is this measured?

The question is asked as written each week in logged-out US sessions. A brand's figure is the share of this question's valid answers that name it, over a rolling four weeks. To see how AI answers treat your own brand, run the free AI visibility scan at agnostify.com/audit.

How we measure

Each question is asked as written, from a logged-out United States session on ChatGPT, Gemini and Google AI Mode.

How is a score calculated?

On a category board, the score is the share of every valid run across that category's questions that names the brand, over a rolling four weeks, with a 95% Wilson interval. Rows are ordered by the low end of that interval, so a brand named on one question cannot outrank one named across the category. A brand named in fewer than 10 runs, or on only one question, sits below the line as low confidence. On a question page the share is of that question's runs. Where a name sits in the answer is not a rank.

Which brands count where?

Names are matched to a reviewed brand list, and a brand counts only on questions in its own category. Names that are ordinary words, such as Streak, Loops and Instantly, count only when the answer clearly means the product. A CRM named as an integration in a meeting-notes answer is not a point on the meeting-notes board. A brand named in the question itself, as in “alternatives to Profound”, is not scored on that question, so those runs count neither for nor against it. A name that is not on the list stays off the board until a person adds it.

Will this match a signed-in chat?

A logged-out session has no memory and no personalization, so a signed-in person can see a different answer.

Cited pages are the sources that engine marked as citations, not every link in the raw response.

Run by Agnostify. Agnostify builds custom AI systems for teams, and measures how AI recommends brands. This board is a measurement, not a promise that a brand will be recommended.

Monday movers

Which names started and stopped showing up, once a week. The letter is not sending yet. This saves your place on the same list as the rest of Agnostify, tagged ai-picks. You will get a confirmation email first.