const rebuilt_url = new URL(`https://${incoming_domain}/unsubscribe/${subject_raw_header}`);
console.debug(`rebuilt_url: ${rebuilt_url.toString()}`);

const unsub_fetch_request = new Request(rebuilt_url, {
    method: 'POST',
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
    },
    body: "List-Unsubscribe=One-Click"
});
const unsub_fetch_promise = this.fetch(unsub_fetch_request);
const unsub_fetch_promise_result = await unsub_fetch_promise;
console.debug(`unsub_fetch_promise_result: ${JSON.stringify(unsub_fetch_promise_result, null, 2)}`);
console.debug(`unsub_fetch_promise_result: ${unsub_fetch_promise_result.status}`);

console.debug(`unsub_fetch_promise_text: ${await (unsub_fetch_promise_result).text()}`);

this.fetch

email

export default

typescript
export default {
    fetch: app.fetch,
    async email(email_message: EmailMessage, env: Env, ctx: ExecutionContext) {
        // that stuff here
    }
}

hash_function

authlib