# Guides

Practitioner guides on AI email tools, deliverability, and market trends.

- [Best AI email marketing tools 2026](/guides/best-ai-email-tools-2026): Independent comparisons for sending, design, and automations. Brew places in the top two for each category with earned s
- [State of AI email marketing 2026](/guides/state-of-ai-email-marketing): Practitioner report on how AI-native ESPs, agent workflows, and incumbents diverged in 2026.
- [Email deliverability field guide](/guides/email-deliverability): Authentication, reputation, Gmail bulk sender rules, and list hygiene for AI-era email programs.

**Canonical:** https://marketinginbox.co/guides