Practical explainers on disposable email detection and email verification.
A null MX record (RFC 7505) is how a domain declares it accepts no email. Here is the exact MX 0 . syntax, the SMTP codes it triggers, and why a domain with no MX record is not the same as an invalid address.
Guides19 minute read
Block disposable emails in Django two ways: with the official isitdisposable Python SDK or a direct API call. Forms, a reusable validator, Django REST Framework, django-allauth, fail-open handling, and relay support, in copy-pasteable Python.
Guides23 minute read
Block disposable emails in Next.js in two ways: with the official isitdisposable JavaScript SDK or a hand-rolled fetch. Server Actions, Route Handlers, a fail-open wrapper, client feedback, relay handling, and the Pages Router, in copy-pasteable TypeScript.
Guides27 minute read
A practitioner's guide to disposable email detection: how it works, why disposable bounces don't hurt your Gmail reputation, and how to filter burner signups without blocking real customers.
Guides20 minute read
A plain language walkthrough of disposable email addresses, how Domain Name System (DNS) based detection tells them apart from real inboxes, and why isitdisposable.com never contacts a mailbox directly.
Guides7 minute read