The Complete List of Disposable Email Domains (2026)

Disposable email services let anyone create a temporary inbox in seconds. They're used to bypass signup forms, abuse free trials, and pollute your user database with addresses that will never receive a follow-up email.

If you run a SaaS product, newsletter, or any service with email-based signups, blocking disposable emails is essential. Below is a comprehensive, maintained list of 500+ known disposable email domains.

Why block disposable emails?

• Bounce rates: Disposable addresses expire within minutes or hours. Sending to them hurts your sender reputation.
• Free trial abuse: Users create unlimited accounts with throwaway emails to avoid paying.
• Data quality: Your user database fills with unreachable addresses, skewing metrics and wasting storage.
• Spam signups: Bots use disposable emails to create fake accounts at scale.

The most common disposable email providers

These 20 domains account for the majority of disposable email usage:

mailinator.com
guerrillamail.com
tempmail.com
yopmail.com
10minutemail.com
throwaway.email
maildrop.cc
trashmail.com
temp-mail.org
dispostable.com
sharklasers.com
guerrillamail.net
mailnesia.com
getnada.com
mohmal.com
emailondeck.com
fakeinbox.com
tempinbox.com
mailcatch.com
mailsac.com

Full list (500+ domains)

Below is the complete list. You can copy this into a blocklist, load it into a Set for O(1) lookups, or use an API that maintains the list for you.

This is a subset. The full list has 500+ domains and is updated regularly as new disposable services appear.

How to use this list in your code

JavaScript / Node.js

const disposableDomains = new Set([
  "mailinator.com",
  "guerrillamail.com",
  "tempmail.com",
  // ... paste the full list here
]);

function isDisposable(email) {
  const domain = email.split("@")[1].toLowerCase();
  return disposableDomains.has(domain);
}

Python

disposable_domains = {
    "mailinator.com",
    "guerrillamail.com",
    "tempmail.com",
    # ... paste the full list here
}

def is_disposable(email: str) -> bool:
    domain = email.split("@")[1].lower()
    return domain in disposable_domains

The problem with maintaining your own list

New disposable email services launch every week. A static blocklist goes stale fast. You have two options:

• Self-maintain: Fork this list and add new domains as you discover them. Works, but requires ongoing effort.
• Use an API: Let someone else maintain the list. MXCheck checks against 500+ disposable domains and adds new ones regularly.

How disposable email services work

Most disposable email services work one of two ways:

• Public inboxes: Anyone can read any inbox at the domain (e.g., Mailinator). No signup required. Type any-address@mailinator.com and the inbox exists instantly.
• Time-limited inboxes: A temporary address is created and self-destructs after 10-60 minutes (e.g., 10MinuteMail). Good enough to receive a verification link.

Both types share a trait: the domain is known and can be blocklisted. The challenge is keeping up with new domains as they appear.

What about catch-all domains?

Some disposable services use subdomains or dynamically generated domain names to evade blocklists. A pure domain blocklist won't catch these. For those cases, MX record analysis helps: if a domain's MX records point to known disposable email infrastructure, it's likely disposable regardless of the domain name.

This is one reason API-based detection outperforms static lists — the API can combine domain blocklists, MX record analysis, and pattern matching for higher accuracy.