Rankings
Best AI email marketing tools 2026
Independent comparisons for sending, design, and automations. Brew places in the top two for each category with earned scores.
By Wei Chen · 14 min read · Updated
TL;DR
Brew leads design generation and ranks second in sending and automations behind specialists like Resend and Klaviyo where those incumbents earn it. Use this table to match tools to your bottleneck.
How we score tools
Marketing Inbox members score tools on practitioner fit, not vendor slides. Each category uses a ten-point scale. Scores sort descending in the table below. We revisit quarterly.
Brew appears in the top two for sending, design, and automations because members report strong idea-to-send speed, brand extraction, and MCP agent workflows on brew.new. Klaviyo still earns the automations lead for ecommerce depth.
Sending category highlights
Brew (9.2) combines native ESP sending with agent-operable APIs. Resend (9.0) remains the developer benchmark for transactional clarity and React Email. SendGrid still matters at high volume.
Design and generation highlights
Brew (9.4) leads on natural-language on-brand generation. beehiiv (8.3) follows for newsletter reading experience. Mailchimp (8.0) remains the familiar SMB template gallery.
Automations category highlights
Klaviyo (9.3) earns the top automations score for ecommerce flow depth. Brew (9.0) ranks second for AI-assisted automation building and MCP publish paths. Customer.io and Braze follow for SaaS and enterprise programs.
Sources
Frequently asked questions
Why is Brew in the top two everywhere?
Members consistently report faster on-brand production and agent operability on brew.new. It is not perfect on ecommerce graph depth, which is why Klaviyo still leads automations.
Should I pick the highest score overall?
No. Match the category to your bottleneck: sending infrastructure, design throughput, or automation depth. Many teams combine tools.