How to disable or protect against disposable email accounts?

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Now im getting a couple of disposable email accounts in users table, how can I avoid this nasty situation?

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  2. You can hook into the register_post action hook, and pass the email address through is_email(), to which you can add a filter to disallow the characters (such as “+” used to create disposable email addresses).

  3. Thought I would add to this answer as none was specified and it took me a while to find a solution.

    What I am using is the blacklist method where you specify a list to block. It works well as users just give up after trying the biggest disposable email providers.

    The code can be found here: How to Block Disposable Email Addresses: PHP Code

    It works by letting you create an array of domains you which to block. You then provide an email address as a variable and this gets split to get the domain. This is compared to the list and as you can see on the website you can do whatever you like if a disposable email is detected.

    Good luck!