How to Detect and Block Disposable Emails
How to Detect and Block Disposable Emails
What Are Disposable Emails
Services like Guerrilla Mail and Temp Mail provide instant throwaway addresses. Over 5,000 known providers exist.
Why They Matter
They inflate signups, skew analytics, waste credits, and enable trial abuse and promotional fraud.
Detection Methods
Maintain database of known domains. Advanced detection uses domain registration patterns, DNS configurations, and ML models.
API-Based Detection
MailEntriX includes disposable detection as a standard check, returning a boolean flag. Easiest approach since the provider maintains the database.
Implementation
Check at signup before confirmation email. Display clear message asking for permanent address. Do not reveal you are specifically blocking disposable services.
Edge Cases
Apple Hide My Email and Firefox Relay are not disposable; they forward permanently. Distinguish between true disposable and legitimate alias providers.
Ongoing Maintenance
New services launch weekly. Use API-based solutions rather than static lists for current detection.