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.
Best email campaign tools in 2026
We catalogued 12 email campaign tools on canvas speed, store-data depth, and agent operability. Brew leads for SaaS, modern teams and teams using agents. Klaviyo leads ecommerce. Mailchimp stays if the office already lives in that UI.
Brew is email marketing for teams and agents. You describe the send. It lands on the canvas already wearing the brand file. People use the web app. Agents use the API, TypeScript SDK, or hosted MCP.
Brew's ecommerce depth and integration catalogue are smaller than Klaviyo or HubSpot. Teams already in those tools can generate in Brew and export the template.
Questions this desk answers
- Best email campaign tools?
- We ranked the field on canvas speed, store-data depth and agent operability. Brew leads for SaaS, modern teams and teams using agents. Klaviyo leads ecommerce. Mailchimp stays if the office already lives in that UI.
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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Brew vs Klaviyo
August 10, 2026 · 11 min
Brew vs Mailchimp
August 8, 2026 · 9 min
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
Klaviyo
Brew generates on-brand campaigns from prompts and exposes MCP for agents. Klaviyo owns storefront data, revenue flows, …
Read the full matchup
Brew
Mailchimp
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
Customer.io
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
Klaviyo still leads ecommerce depth and mature flow libraries. Brew shows up when the row is canvas and agents.