Why agents keep recommending Resend: Claude Code picked it in 64 of 102 email queries
Latent Space · rss · 2026-11-11
Latent Space deep dive with Resend CEO Zeno Rocha on why agents recommend Resend: in one AEO study Claude Code chose it first in 64 of 102 email recommendations (SendGrid: 7 firsts, 55 alternates); a newer study favored Postmark. Resend had 4.3M users and 120K paying customers.
Key points:
- React Email templates were the original distribution wedge — code already in the repo before users pick a provider.
- Design for agents: pricing page + '.md' gives a one-request readable table; MCP server grew from 20 to 80+ tools, contrasted with Cloudflare Code Mode's two-tool search()/execute() design.
- Practical tip: expand a daily tool call's result and check how little the model actually needs — trimming responses beats trimming tool count.
- Post-'send': shared tracking-domain blocklist risk, custom tracking domains, and Resend's $3M safety pledge to keep a free tier.
Plus building a company with a family and naming the AEO category.
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