Operator Notes
5 min readWhat is Flowmails?
A Cloudflare-native email routing platform that keeps your inbox and outbox in your own D1, with a REST API on top.
Self-hosted · CFFlowmails
Runtime v0.1
Journal
Operator notes on Cloudflare-native email.
Long-form writing about self-hosted email in D1, Workers-native routing, the REST API, and the parts of the platform that show up in the security review.
Categories
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Deep Dive
8 min readHow Workers-native email routing actually processes your inbound mail
A tour of the runtime: Email Routing, the Worker, the R2 bucket for attachments, and the D1 tables behind a single inbound message.
Tutorial
10 min readCustom Email Routing on Cloudflare: Build Your Own Address Book
Why a catch-all isn't always enough, how Flowmails route tables replace it with explicit literal-matcher rules, and how to switch safely.