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If you are running a web service you would not want users to create one-time accounts using disposable email addresses. This would contaminate your userbase and be counterproductive. A useful tool to check whether or not an email address is one-time or bogus, is a site called “Block Disposable Email”.

detect fake email addresses

Block Disposable Email is a free to use web service that helps detect one-time and fake email addresses by searching domains that offer disposable email services. You simply provide the site with the email address to check and it checks whether or not the address is valid. The results are displayed in text form; if you receive a false positive, you can let the site’s developer know so that the error is corrected.

block fake emails

Forum administrators and owners using phpBB can use the modification available on the “Block Disposable Email” site to integrate the service to their forum easily.


  • A user-friendly web service.
  • Lets you detect fake email addresses.
  • Lets you detect disposable email addresses.
  • Can be integrated into your phpBB forum.

Check out “Block Disposable Email” @

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  1. Alex Tereshkin
    July 8, 2011 at 9:30 am

    How about a more gentle approach? 

    Many people who use disposable email do it not because they are afraid of spam (who cares about it these days, hotmail users?) but because of the anonymity it provides. So instead of banning disposable emails, hint them to use a permanent anonymous email address. This way everyone is happy: the user stays anonymous and you have deliverablity for your list. 

    I've made a simple widget just for that some time ago:

  2. Itzekocke Setzling
    May 1, 2011 at 6:39 pm

    Can you please give some examples?

  3. Anne H
    May 1, 2011 at 2:54 pm

    I don't think I would impose this restriction on my users. I think there are too many legitimate reasons why people would want to use a disposable email address.

  4. Chris
    May 1, 2011 at 2:50 am

    If you're running a web service where I'm forced to handover my email address when it's unnecessary for the use of that service, I will create a throwaway email. If you deny that then I'll find a less obnoxious service.

    There are far too many services that make you sign up just so they can boast they have another member (even though the new member may never return).