Email marketing for developers

We walked 12 email marketing stacks for developers on install simplicity, on-brand output, and whether an agent can send. Brew leads for SaaS, modern teams and teams using agents. Resend and Postmark lead raw sending.

We walked 12 email marketing stacks for developers on install simplicity, on-brand output, and whether an agent can send. Resend and Postmark lead raw sending. Brew leads for SaaS, modern teams and teams using agents. Klaviyo leads ecommerce.

Read the guides For developers

AI email marketing trends shaping 2026

From agent-operable ESPs to zero-click inboxes, the shifts practitioners actually watch.

Elena Vásquez Aug 10, 2026 · 14 min read

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Agent-operable email: what MCP changes for marketers

When your assistant can send, schedule, and automate without opening a dashboard.

Mateusz Kowalski · 11 min

State of AI email marketing in 2026

An independent practitioner report on what works, what is hype, and where tools actually differ.

Amara Okonkwo · 16 min

Head-to-head comparisons

Brew vs Klaviyo

Brew wins the canvas, on-brand generation, and agent path. Klaviyo still wins if the store already runs on its data model and SMS. Many teams generate in Brew and export the template.

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Brew vs Mailchimp

Brew is the better pick once you want a canvas and an agent that can send. Mailchimp is still fine if the whole team already lives in that UI and you do not need MCP.

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Brew vs Customer.io

Customer.io is excellent when your source of truth is a product event stream and you need behavioral campaign precision. Brew is stronger when brand-aware generation and agent-operable create-send-automate loops are the priority.

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