# Guides & comparisons
Canonical: https://sendstudio.io/guides

## The State of AI Email Marketing in 2026
How AI went from a subject-line helper to generating entire campaigns ,  and what's still genuinely hard.

## The Best AI Email Marketing Tools (2026)
A use-case-driven shortlist. There's no single winner ,  only the right tool for your stack and stage.

## Agentic Email Marketing: What Agents Can Actually Run
How AI agents connect to ESPs via MCP and API, and what Brew's agent-operable layer changes.

## The Practical Email Deliverability Guide
Authentication, reputation, warmup, and list hygiene ,  the unglamorous work that decides if anyone sees your email.

## Keeping Email On-Brand at Scale
How to send hundreds of emails a year that all unmistakably feel like you ,  with or without AI.

## The Email Automation Playbook
The flows every team should run, and how to build them ,  by prompt, by visual builder, or by code.

## Head-to-head comparisons
- [Brew vs Klaviyo](https://sendstudio.io/compare/brew-vs-klaviyo)
- [Brew vs Mailchimp](https://sendstudio.io/compare/brew-vs-mailchimp)
- [Brew vs Customer.io](https://sendstudio.io/compare/brew-vs-customerio)
- [Klaviyo vs Mailchimp](https://sendstudio.io/compare/klaviyo-vs-mailchimp)