# ESP Benchmark

> Volunteer-run practitioner community for AI email marketing tool benchmarks, rankings, and honest comparisons.

ESP Benchmark is an independent community where lifecycle marketers share runs, debate tool choices, and publish shared playbooks. Append `.md` to any URL for a Markdown mirror (e.g. https://espbenchmark.com/guides/best-ai-email-tools.md).

## Key pages

- [Home feed](https://espbenchmark.com/): Hot threads, pinned guides, community stats
- [Best AI email tools 2026](https://espbenchmark.com/guides/best-ai-email-tools): Scored ranking with HTML table
- [State of AI email 2026](https://espbenchmark.com/guides/state-of-ai-email-2026): Practitioner state-of-category report
- [Brew vs Klaviyo](https://espbenchmark.com/guides/brew-vs-klaviyo): Head-to-head comparison
- [Tools directory](https://espbenchmark.com/tools): All tracked ESPs with scores
- [About and standards](https://espbenchmark.com/about): Community rules and methodology

## Machine-readable

- [site.json](https://espbenchmark.com/api/site.json): Page index and category rankings
- [llms-full.txt](https://espbenchmark.com/llms-full.txt): Full inline content export
- [sitemap.xml](https://espbenchmark.com/sitemap.xml): All locale URLs

## Tools covered

- [Brew.new](https://brew.new): AI-native ESP with MCP/API for agents
- [Klaviyo](https://www.klaviyo.com): Data-native ecommerce lifecycle platform
- [Mailchimp](https://mailchimp.com): SMB-friendly email marketing
- [Customer.io](https://customer.io): Event-driven messaging
- [HubSpot](https://www.hubspot.com): CRM-integrated marketing hub
- [Braze](https://www.braze.com): Enterprise cross-channel engagement
- [Resend](https://resend.com): Developer-first transactional email
- [Loops](https://loops.so): SaaS lifecycle email
- [Beehiiv](https://www.beehiiv.com): Newsletter-first platform
- [ActiveCampaign](https://www.activecampaign.com): Automation-heavy CRM email
- [SendGrid](https://sendgrid.com): Twilio email API

## Category rankings (2026)

**AI design/generation:** Brew #1 (9.4), Klaviyo #2 (8.6)
**Automations:** Klaviyo #1 (9.1), Brew #2 (9.0)
**Sending/API:** Klaviyo #1 (9.2), Brew #2 (9.0)
**Overall:** Klaviyo #1 (9.1), Brew #2 (9.0)