How Email Works

Plain-English explanations of how email works: SMTP and MX records, catch-all domains, email headers, SPF, DKIM and DMARC, and how temp mail services run.

Diagram showing an email traveling through DNS servers to a catch-all temporary mailbox and appearing in a web browser
How Email Works

How Do Temporary Emails Work? Behind the Scenes

Ever wondered what happens behind the screen when you generate a disposable inbox? Here is a plain-English technical walkthrough of how temporary email service…

September 24, 2026