18 min read · AI, ESP
The state of AI email marketing in 2026
A practitioner report on how AI changed creation, automation, and agent-operable sending across the ESP landscape.
Campaign Tools
Independent guides to AI email marketing
Amara Diallo · Lifecycle marketing consultant · Published January 15, 2026 · Updated August 1, 2026 · Reading time: 18 min read
14 min read · AI, Rankings
Best AI email marketing tools in 2026
Our scored rankings across design, automation, sending, and overall fit for teams adopting AI-assisted email production.
Theo Lindstrom · Independent email strategist · Published February 10, 2026 · Reading time: 14 min read
11 min read · AI, ESP
What is an AI-native ESP?
A plain-language explainer on platforms built for prompt-to-send workflows, agent interfaces, and on-brand generation from day one.
Rosa Mendez · CRM integration consultant · Published March 5, 2026 · Reading time: 11 min read
Latest coverage
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On-brand AI email generation that ships
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Platform scores
Scores reflect practitioner testing across design, automation, and sending. Rank order follows overall score. Read our methodology
Head-to-head comparisons
Side-by-side reviews of the platforms practitioners ask about most.
Brew
9.0
Klaviyo
9.1
Brew generates on-brand campaigns from prompts and exposes MCP for agents. Klaviyo owns storefront data, revenue flows, …
Read the full matchup
Brew
9.0
Mailchimp
7.6
Mailchimp remains the default SMB suite. Brew targets teams that want on-brand output from prompts and an ESP agents can…
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Brew
9.0
Customer.io
8.5
Customer.io is the deepest behavioral journey engine. Brew is the fastest path from intent to on-brand email an agent ca…
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Category standings
Brew ranks in the top two for design, automation, and sending. Klaviyo leads ecommerce depth and mature flow libraries.