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Sunday, October 25, 2009

CAPTCHA in Google Gmail

Google has a mecanism for preventing robots to login into Gmail. It's very usefull. Only when didn't remember exactly your password when configuring an email client its rather nasty, because you cannot login anymore except with your webmail. Another reason for the invalid credentials or web login requires error to happen is too frequent mail checking. Gmail says that you shouldn't do that more than once every 10 minutes.

If you’re very sure that you’re using a correct password and username (with after the user name), and not checking email in Gmail’s Inbox too frequently, you may need to clear and unlock the CAPTCHA. To unlock CAPTCHA for Gmail account, go to the following URL:

Note: For Google Apps user, visit instead, with as the valid domainname.

Type in the email address, password for the Gmail address, and fill in the correct Captcha validation. Click on “Unlock” button to fix the IMAP failure error.

For user who still faces the problem after clear the Captcha can try to use an alternative IMAP server instead, which is on SSL port 993.

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