Why We Built Email Infrastructure on the Edge
Running Rust/WASM on Cloudflare Workers gives us sub-millisecond cold starts, global distribution, and no always-on servers. Here's why that matters for email.
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Technical deep-dives
Honest writing about email infrastructure, deliverability, and the edge-first architecture.
BYODKIM: One TXT Record Instead of Three CNAMEs
Bring Your Own DKIM simplifies domain verification. We generate an RSA keypair, sign your emails, and you publish one TXT record. Here's the technical breakdown.
Read more →How We Built the Auto-Pause Circuit Breaker
When a tenant's bounce rate hits 5%, we automatically suspend sending. This protects your sender reputation and prevents cascading failures.
Read more →Relay vs Resend vs Postmark: An Honest Comparison
We're not afraid to say where competitors are stronger. Here's a straight comparison of architecture, features, pricing, and developer experience.
Read more →The Cost of Email at the Edge
Cloudflare Workers charge per-request, per-CPU-ms. We break down exactly what it costs to send 1 million emails on our architecture vs traditional containers.
Read more →Building an AI Email Design Studio
How we used Cloudflare Workers AI to let developers generate beautiful emails from natural language prompts — no design skills required.
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