Why It Matters
For senders, burner emails are a list quality problem. They inflate your subscriber count with addresses that will go dead within days or weeks, spiking your bounce rate and wasting your sends. For individuals, they're a privacy tool — a way to test a service without committing to yet another marketing list.
How It Works
Services like Guerrilla Mail, Temp Mail, and 10 Minute Mail generate disposable addresses on the fly. The user receives emails at that address just long enough to confirm a signup or download something, then the address self-destructs. Some burner services last minutes; others stay active for days.
From a sender's perspective, burner addresses are tricky because they look legitimate at the time of signup. They pass syntax checks and even receive a confirmation email. But within days, they bounce.
Quick Tips
- Use email verification APIs that flag known disposable email domains at signup time. Most verification services maintain a database of thousands of disposable providers.
- Require double opt-in. Burner email users rarely bother clicking a confirmation link, which filters them out naturally.
- Don't take it personally. People use burner emails because they've been burned by spam. Focus on building trust so subscribers want to give you their real address.