Transactional email delivery
Send application notifications through a Workers binding, REST API, or authenticated SMTP after onboarding a sending domain and securing the required credentials.
- For receipts, alerts, sign-in messages, and other app-triggered email.
- Arbitrary-recipient sends require a Workers Paid plan under Cloudflare's current plan rules.
- Not a mailbox service; it does not provide inboxes, folders, contacts, or calendar hosting.