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Free Disposable Email Checker

Find out instantly whether an email address or domain belongs to a disposable, temporary or burner email service. We check it against 9,203 known throwaway domains and look up its mail servers.

Disposable

getnada.com

getnada.com is a disposable email domain (matched getnada.com). Addresses here are temporary and will stop working.

Disposable domain: Yes
Mail servers (MX): mail.getnada.com
Free email provider: No

This free check looks at the domain. To confirm the mailbox itself exists, run a full validation (100 free).

How the disposable email checker works

1 Format check

We read the domain from the address and make sure it is well-formed. You can also enter just a domain, like example.com.

2 Disposable blocklist

The domain and each parent domain are matched against 9,203 known disposable providers, so inbox.mailinator.com is caught as well as mailinator.com.

3 Mail server lookup

A live DNS lookup checks whether the domain publishes MX records. A domain that can't receive email is flagged even if it isn't on the list.

The blocklist is the community-maintained disposable-email-domains project, released into the public domain. We also flag free providers such as Gmail and role addresses such as info@ so you can treat them separately.

What the results mean

Disposable

The domain belongs to a temporary email service. The inbox will expire, so treat the signup as low quality and don't add it to your mailing list.

No mail server

The domain publishes no MX records, so it can't receive email. Anything you send will bounce, whether or not the domain is disposable.

Not disposable

The domain isn't a known throwaway provider and has mail servers. This is a domain-level result: run a full validation to confirm that the individual mailbox exists.

Invalid format

What you entered isn't a valid email address or domain, so it can't receive mail. Check for typos such as a missing dot or a space.

Common disposable email providers we detect

Temporary email services hand out a working inbox instantly, with no signup, and delete it after minutes or days. Many run dozens of alias domains, and new ones launch every week to dodge blocklists. These are some of the most widely used services, all detected by this checker:

Because the list of throwaway domains keeps growing, a blocklist alone can't catch everything. That's why full validation also checks whether each mailbox actually exists before you send to it.

Why block disposable email addresses?

Fake signups and trial abuse

Burner inboxes let one person open account after account to reuse free trials, coupons and referral rewards.

Misleading metrics

Throwaway signups never come back or open your emails, so they inflate user counts and drag down activation and engagement rates.

Bounces that hurt deliverability

Once a temporary inbox expires, every email to it hard-bounces. High bounce rates damage your sender reputation with Gmail, Outlook and other mailbox providers.

Lost contact with real customers

Receipts, password resets and onboarding emails sent to a dead inbox never arrive, so legitimate-looking users quietly churn.

Check a whole list, or block disposable emails at signup

Disposable email list checker

Upload a CSV and BounceNot flags every disposable address along with invalid, catch-all and unreachable ones, then lets you download the clean list. Duplicates are skipped and never charged.

Clean an email list

Disposable email checker API

Validate addresses as they're entered on your signup form. Every response includes a disposable flag plus full deliverability results.

curl 'https://bouncenot.oddbench.co/api/v1/validate/name@example.com' \
  -H 'Authorization: Bearer YOUR_API_KEY'

# { "disposable": false, "reachable": "yes", ... }

Read the API docs

Disposable email checker FAQ

What is a disposable email address?

A disposable (temporary or burner) email address comes from services such as Mailinator, 10 Minute Mail or Guerrilla Mail. The inbox works for a few minutes or hours and is then abandoned, so people use them to grab free trials, downloads and discounts without sharing their real address.

How do you check if an email is disposable?

Compare the email's domain, including parent domains such as mailinator.com for inbox.mailinator.com, against a list of known disposable providers, then confirm the domain has mail servers. This checker does both instantly: enter an email address or a domain above.

How many disposable domains does this checker detect?

It currently checks against 9,203 known disposable domains from the community-maintained open-source blocklist. New throwaway services appear all the time, so no list is ever complete; full validation adds a live mailbox check on top.

Why should I block disposable emails?

Throwaway addresses are used for fake signups and to abuse free trials and promotions. They inflate your user numbers, never read your emails, and turn into hard bounces once the inbox expires, which hurts your sender reputation.

Is a Gmail or Outlook address disposable?

No. Gmail, Outlook, Yahoo and similar services are free email providers, not disposable ones: the inbox belongs to a real person and lasts. The checker labels them as free providers so you can treat business and personal addresses differently.

Is there a disposable email checker API?

Yes. The BounceNot validation API returns a disposable flag together with full deliverability results for each address, at one credit per validation. This web tool is free and needs no account.

Does "not disposable" mean the email address exists?

No. This free tool checks the domain, not the individual mailbox. To confirm that a specific mailbox exists and accepts mail, run a full validation, which includes an SMTP mailbox check.

Go beyond the domain: verify the mailbox

Full validation checks syntax, MX, SMTP deliverability, catch-all and disposable status for every address. Your first 100 validations are free.

Get 100 free validations