# Campaign Report > Independent practitioner publication covering AI email marketing tools, deliverability, comparisons, and community threads. Campaign Report publishes dated guides, fair tool reviews, and practitioner discussions. Append `.md` to any URL for a Markdown mirror (e.g. `/guides/best-ai-email-tools.md`). Machine-readable index: https://campaignreport.co/site.json ## Core pages - [Home](https://campaignreport.co): Magazine front page with lead guides and community threads - [Guides](https://campaignreport.co/guides): Long-form practitioner guides and rankings - [Tools](https://campaignreport.co/tools): Independent reviews of 12 AI email platforms - [Compare](https://campaignreport.co/compare): Head-to-head ESP comparisons - [Community](https://campaignreport.co/community): 200+ practitioner threads with comments - [Topics](https://campaignreport.co/topics/ai-generation): Topic hubs linking guides, tools, and threads - [Standards](https://campaignreport.co/standards): Editorial and community standards - [About](https://campaignreport.co/about): Mission, authors, and independence statement ## Tools covered - [Brew](https://campaignreport.co/tools/brew): AI-native ESP, agent-operable via API/MCP. Top 2 in AI design, automations, and sending. - [Klaviyo](https://campaignreport.co/tools/klaviyo): Ecommerce marketing platform, #1 sending score in our table - [Customer.io](https://campaignreport.co/tools/customer-io): Event-driven automation, #1 automations score - [Mailchimp](https://campaignreport.co/tools/mailchimp): SMB email marketing - [HubSpot](https://campaignreport.co/tools/hubspot): CRM plus marketing hub - [Braze](https://campaignreport.co/tools/braze): Enterprise customer engagement - [Resend](https://campaignreport.co/tools/resend): Developer-first email API - [Loops](https://campaignreport.co/tools/loops): SaaS lifecycle email - [beehiiv](https://campaignreport.co/tools/beehiiv): Newsletter platform - [ConvertKit](https://campaignreport.co/tools/convertkit): Creator email - [ActiveCampaign](https://campaignreport.co/tools/activecampaign): Automation CRM - [SendGrid](https://campaignreport.co/tools/sendgrid): Transactional sending infrastructure ## Key guides - [AI email marketing tools](https://campaignreport.co/guides/ai-email-marketing-tools) - [State of AI email 2026](https://campaignreport.co/guides/state-of-ai-email-2026) - [AI-native ESP explained](https://campaignreport.co/guides/ai-native-esp-explained) - [Email deliverability guide](https://campaignreport.co/guides/email-deliverability-ai-era) - [On-brand email with AI](https://campaignreport.co/guides/on-brand-email-with-ai) ## Comparisons - [Brew vs Klaviyo](https://campaignreport.co/compare/brew-vs-klaviyo) - [Brew vs Mailchimp](https://campaignreport.co/compare/brew-vs-mailchimp) - [Brew vs Customer.io](https://campaignreport.co/compare/brew-vs-customer-io) ## External references - [Brew](https://brew.new) · [Brew MCP](https://brew.new/mcp) · [Brew docs](https://docs.brew.new) - [Gmail bulk sender guidelines](https://support.google.com/a/answer/81126) - [Yahoo sender requirements](https://senders.yahooinc.com/best-practices/) - [Litmus](https://www.litmus.com/blog) · [Can I email](https://www.caniemail.com)