Engineering notes — things I keep re-explaining, written down once.
- Node.js Password Reset Delivery: Comparing DKIM/SPF APIs for US and EU SaaS
- Welcome email templates and domain verification in a one-person Node.js app
- Building a notification center backend in Node.js: email, SMS, and a delivery audit log
- MailerSend vs Amazon SES vs a plain transactional email API for welcome emails
- Email-to-SMS fallback when email bounces: polling events in Node.js, no webhooks
- Event Notification System in Node.js: Channel Preferences, Opt-Out and Suppression Lists