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Tired of spam? reCAPTCHA Mailhide helps you protect your inbox by asking people to solve a reCAPTCHA before they can view your email address.

The reCAPTCHA can only be solved by humans, so this stops spammers from gaining access to your email address through automated programs. Here is an example: john...@example.com


Protect an email address:

Enter an email address and we'll give you HTML code that requires users to solve a reCAPTCHA before they can see the address. (We stop spam, we don't create it -- we won't share your address.)


Use the reCAPTCHA Mailhide API

Are you running a web application that lists users' email addresses? Do your users a favor by shielding them from spam with reCAPTCHA Mailhide.

  • Get an API Key. We'll give you a cryptographic key for encrypting email addresses.
  • Mailhide API. Documents the protocol used by Mailhide.
  • Libraries. Many reCAPTCHA libraries make it easy to use Mailhide in languages like PHP, Python, Perl and Ruby.