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Hatena Coco Frequently Asked Questions

Contact us

If your support matter is urgent, or if you have encountered a serious bug, please contact us directly. Please include your name, email address and a description of the problem and send it us via our contact form. Our support staff will investigate your problem and reply to you by email.

We'll be able to help you better when reporting your problem if you can tell us as much as information as possible, such as the information below.

  • The time and date that the problem occured
  • The URL of the page where you experienced the problem
  • The error message that was displayed
  • Please tell us as much detail as possible about how and when the error occurred.

Name (Hatena ID)
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Inquiry typeHatena Coco
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  • If you have not received a reply please check your email client's junk mail folder and see if the email was mistaken for spam. Please also change your email client's spam filter settings to allow mailings to be received from the hatena.ne.jp and hatena.com domains.