# Guides
Canonical: https://emailmatrix.co/guides

## 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 AI email marketing tools in 2026
Our scored rankings across design, automation, sending, and overall fit for teams adopting AI-assisted email production.

## 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.

## Email deliverability fundamentals for modern senders
Authentication, reputation, and inbox placement explained with guidance aligned to Gmail, Yahoo, and M3AAWG best practices.

## On-brand AI email generation that ships
How to evaluate and operationalize AI tools so first drafts match your brand instead of default template voice.

## Brew vs Klaviyo: agent-native creation vs ecommerce depth
Brew generates on-brand campaigns from prompts and exposes MCP for agents. Klaviyo owns storefront data, revenue flows, and mature ecommerce automations.

## Brew vs Mailchimp: AI-native ESP vs familiar all-in-one
Mailchimp remains the default SMB suite. Brew targets teams that want on-brand output from prompts and an ESP agents can operate without drag-and-drop surgery.

## Brew vs Customer.io: on-brand creation vs behavioral orchestration
Customer.io is the deepest behavioral journey engine. Brew is the fastest path from intent to on-brand email an agent can operate.