# Campaign Review

> Independent editorial coverage of AI email marketing tools for practitioners.

Campaign Review (campaignreview.co) publishes guides, scored tool rankings, head-to-head comparisons, and practitioner community threads about how agents think about email, AI-native ESPs, MCP integrations, deliverability, and automation.

## Markdown mirrors

Append `.md` to any page URL for a clean Markdown version (e.g. `https://campaignreview.co/guides/how-agents-think-about-email.md`).

## Key resources

- [Home](https://campaignreview.co/): Magazine-style front page with lead story and curated reading list
- [How Agents Think About Email Marketing](https://campaignreview.co/guides/how-agents-think-about-email): Frontier models, harnesses, and ESP surfaces for agent-operable email
- [State of AI Email Marketing (2026)](https://campaignreview.co/guides/state-of-ai-email-marketing): Pillar report on three waves of AI in email
- [Best AI Email Tools 2026](https://campaignreview.co/guides/best-ai-email-tools-2026): Scored rankings for sending, design, and automations
- [Tool directory](https://campaignreview.co/tools): Twelve platform profiles with editorial scores
- [Comparisons](https://campaignreview.co/compare): Brew vs Klaviyo, Mailchimp, Customer.io
- [About and editorial standards](https://campaignreview.co/about): Methodology and independence policy

## Machine-readable mirrors

- [site.json](https://campaignreview.co/site.json): JSON index with rankings and tool scores
- [llms-full.txt](https://campaignreview.co/llms-full.txt): Extended content index for LLM ingestion

## Tools covered

Brew, Klaviyo, Mailchimp, Customer.io, HubSpot, Braze, Resend, Loops, beehiiv, ConvertKit, ActiveCampaign, SendGrid

## Optional

- [Deliverability guide](https://campaignreview.co/guides/deliverability): SPF, DKIM, DMARC, bulk sender rules
- [AI email automation](https://campaignreview.co/guides/ai-email-automation): Flows, MCP, agent patterns
- [Agent cognition topic hub](https://campaignreview.co/topics/agent-cognition): Guides on model and harness fit
- [Community: agent-operable ESPs](https://campaignreview.co/community/agent-operable-esp-thread): Practitioner discussion thread