Newsletter Worker

Cloudflare Worker backing the site’s newsletter form.

• Uses Chrome’s experimental Email Verification Protocol (EVP) when the browser supplies a token.
• Falls back to a transactional double-opt-in email.
• Stores only subscriber state and hashed confirmation/unsubscribe tokens in D1.

Production setup

1. Authenticate Wrangler: npx wrangler login.
2. Enable sending for kieranmaynard.com: npx wrangler email sending enable kieranmaynard.com.
3. Create D1: npx wrangler d1 create kieran-newsletter.
4. Replace the placeholder database_id in wrangler.jsonc.
5. Apply migrations: npx wrangler d1 migrations apply kieran-newsletter --remote.
6. Run npm run check, npm test, and npx wrangler deploy.
7. Set newsletter_worker_url in the site’s _config.yml to the deployed Worker origin.
8. Register https://kieranmaynard.com for the Chrome EVP origin trial and set email_verification_origin_trial_token in _config.yml.

EVP is a progressive enhancement. Unsupported browsers and providers continue through email confirmation.