Free disposable email checker to detect fake & temporary inboxes
Enter an email address to see whether it uses a disposable or temporary mail service. The domain is matched against 100,000+ disposable domains, updated every six hours.
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Enter a corporate or consumer address in the console input to run a live DNS + SMTP probe.
Five free checks an hour, no signup. This tool tells you whether the domain is disposable. To find out whether the mailbox exists, use the free email checker.
How the disposable email check works
Disposable services register new domains all the time. A list that is not updated misses them. This is why the check runs on the Giggal verification service and not on a file inside this website.
Syntax check
The tool checks that the address has a valid format: a local part, one @ sign and a domain. This runs before anything is sent to the server.
Domain check against 100,000+ disposable domains
The domain is matched against the disposable list held by the Giggal verification service. Subdomains of a listed domain count as disposable. The list is rebuilt every six hours and our team adds manual corrections.
Result
The tool reports "disposable" or "not disposable". Not disposable means the domain is not a known temporary mail service. It does not mean the mailbox exists.
Deliverability is a separate check
To find out whether the mailbox exists and accepts mail, use the free email checker. It connects to the mail server and asks. This page only answers the disposable question.
Common disposable email services
These are some of the services on the list. The list also covers the many smaller domains these services register and switch between.
Gives a random temporary inbox with no signup.
Public inboxes. Anyone can read the mail without a password.
Inbox that expires ten minutes after it is created.
Deletes each message one hour after it arrives.
Temporary inbox for one-time signups.
Public inboxes with no password. Messages are kept for a few days.
One of the domains used by Guerrilla Mail.
Temporary forwarding addresses that stop working after a set time.
Why block disposable email addresses
A disposable address is not a contact. The person will not see anything you send after the first few minutes. Three problems follow from that:
Emails nobody reads
Welcome emails, receipts and onboarding sequences go to an inbox that is gone or never opened. Some services reject the mail after the inbox expires, which shows up as a bounce in your reports.
Free trial abuse
One person can create many trial accounts with a new disposable address each time. Blocking these addresses at signup stops most of it. You can automate this on registration forms with our email validation API.
Wrong numbers in your CRM
Disposable signups count as leads but never reply, open or buy. They make your signup numbers look better and your conversion rate look worse than they are.
Single check or bulk check
The tool above checks one address at a time. It is useful for a suspicious signup or a single lead. For a whole list, one address at a time is too slow.
In the Giggal dashboard you can upload a CSV or TXT file to our email list cleaning service and check the whole list at once. Every address is checked for disposable domains, role accounts such as info@ or sales@, and whether the mailbox exists. On catch-all domains, where a standard check cannot confirm a mailbox, Giggal runs a deeper check. A free account comes with 1,000 credits.
Questions about disposable email checking
A disposable email address is a temporary inbox from a service such as Mailinator, Temp-Mail or 10MinuteMail. Anyone can create one in seconds without a password. People use them to get past a signup form or a gated download without giving a real address. The inbox is deleted after a set time, or the person never opens it again.
It sends the address to the Giggal verification service. The service holds a list of 100,000+ disposable and temporary mail domains. The list is rebuilt from public sources every six hours, and our team adds manual corrections. If the domain, or a parent domain, is on the list, the tool reports it as disposable. If not, the tool reports it as not disposable.
No. It means the domain is not a known disposable mail service. The mailbox may still not exist. To check that, run the address through the free email checker. It does a live mailbox check and tells you whether the address can receive mail.
Sometimes. Some services accept every message and delete it after a set time. Others close the inbox after a few minutes and reject mail after that. In both cases the person will not read your email later. Treat the address as unusable either way.
Yes. You get 5 free checks an hour with no signup. To check a whole list, sign up for a free account. It comes with 1,000 verification credits.
Connect Giggal to your form or app through the API or the Zapier integration. Each address is checked when it is submitted. If it is disposable, you can ask the person for a different address before the account is created.
A free provider such as Gmail, Yahoo or Outlook gives people a permanent mailbox with a password. A disposable service gives people a temporary mailbox that is meant to be thrown away. Giggal flags disposable addresses and leaves normal free mailboxes alone.
Yes. Upload a CSV or TXT file in the Giggal dashboard. Every address is checked for disposable domains, role accounts, catch-all domains and whether the mailbox exists.
Block disposable emails and clean your list
1,000 free credits, no card required.