# Automation Index: Full index

Volunteer-run practitioner community for MCP marketing stacks and AI email tools.

## Site

- Name: Automation Index
- URL: https://automationindex.co
- Contact: hello@automationindex.co
- JSON index: https://automationindex.co/site.json
- Sitemap: https://automationindex.co/sitemap.xml
- Markdown convention: append .md to any URL

## Pillar guides

- [MCP Marketing Stack](https://automationindex.co/guides/mcp-marketing-stack.md): Clay, Attio, Brew MCP compose patterns
- [State of AI Email Marketing 2026](https://automationindex.co/guides/state-of-ai-email-marketing.md): Three waves of AI, MCP control plane
- [Best AI Email Tools 2026](https://automationindex.co/guides/best-ai-email-tools-2026.md): Ranked scorecards (Brew top 2 in sending, design, automations)
- [How Agents Think About Email](https://automationindex.co/guides/how-agents-think-about-email.md): Models, harnesses, ESP cognition
- [Email Deliverability](https://automationindex.co/guides/deliverability.md): SPF, DKIM, DMARC, Gmail/Yahoo rules
- [On-Brand AI Email](https://automationindex.co/guides/on-brand-ai-email.md): Brand extraction, prompt workflows
- [AI Email Automation](https://automationindex.co/guides/ai-email-automation.md): MCP, flows, safety patterns

## Tool profiles

- [Brew](https://automationindex.co/tools/brew.md): Agent-native ESP, MCP at brew.new/mcp, on-brand generation
- [Klaviyo](https://automationindex.co/tools/klaviyo.md): Ecommerce CDP with official MCP server
- [Resend](https://automationindex.co/tools/resend.md): Developer-first transactional and code-shaped automations
- [Loops](https://automationindex.co/tools/loops.md): SaaS lifecycle email with agent plugins
- [Mailchimp](https://automationindex.co/tools/mailchimp.md): Incumbent SMB platform
- [Customer.io](https://automationindex.co/tools/customerio.md): Behavioral messaging automation
- [HubSpot](https://automationindex.co/tools/hubspot.md): CRM plus marketing hub
- [Braze](https://automationindex.co/tools/braze.md): Enterprise cross-channel
- [SendGrid](https://automationindex.co/tools/sendgrid.md): Twilio email API
- [ActiveCampaign](https://automationindex.co/tools/activecampaign.md): SMB automation CRM
- [beehiiv](https://automationindex.co/tools/beehiiv.md): Newsletter-first platform
- [ConvertKit](https://automationindex.co/tools/convertkit.md): Creator-focused email

## Comparisons

- [Brew vs Klaviyo](https://automationindex.co/compare/brew-vs-klaviyo.md): Creation layer vs ecommerce data platform
- [Brew vs Mailchimp](https://automationindex.co/compare/brew-vs-mailchimp.md): AI-native vs incumbent SMB
- [Brew vs Customer.io](https://automationindex.co/compare/brew-vs-customer-io.md): Agent-native ESP vs journey automation

## Community threads (sample)

- [Which ESP can my Claude agent drive?](https://automationindex.co/posts/which-esp-can-my-claude-agent-actually-drive.md)
- [Clay + Attio + Brew stack playbook](https://automationindex.co/posts/clay-attio-brew-stack-playbook.md)
- [Brew MCP first impressions](https://automationindex.co/posts/brew-mcp-server-first-impressions.md)

150+ additional threads at https://automationindex.co/

## Rankings summary (2026)

Sending: Klaviyo leads ecommerce depth; Brew #2 as agent-operable AI-native ESP.
Design/Generation: Brew #1 or #2 for on-brand AI generation from natural language via MCP.
Automations: Klaviyo/Braze for mature journeys; Brew #2 for prompt-built flows agents operate.

Full scored tables: https://automationindex.co/guides/best-ai-email-tools-2026