The Broadcast Blog
Notes from building a self-hosted email platform
Technical deep-dives, design decisions, and lessons from the Broadcast team — written for developers who care about how things actually work.
EU Data Sovereignty for Email Marketers in 2026: The Regulatory Floor Just Moved Again
Three regulatory shoes are about to drop in a 30-day window. Here’s what European email marketers actually need to know about the CLOUD Act, the Data Privacy Framework, and NIS2 — and what self-hosting does and doesn’t fix.
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E2E Email Provider Testing in Rails CI: Verifying Emails Actually Arrive
How we built a system to verify emails sent through AWS SES, Postmark, SendGrid, and Mailgun actually arrive—using Cloudflare Workers, KV storage, and Rails credentials.
Building Self-Hosting Rails Applications: Design Decisions & Why
How we built Broadcast to run on customer servers with a single command—using Docker, SolidQueue, Thruster, and file-based triggers for container-to-host communication.
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