I didn't receive a six-digit code for account registration.

The email is sent from a send-only address [noreply at signate.jp].

If you didn't receive your six-digit code, verification or reset email, please confirm the following:

1. Spam folder
   A spam filter or email rule might move the email to the spam folder. Please check your spam folder.
   
   
2. Security/anti-virus software settings
   If you have installed a firewall or an anti-virus software, these might mistakenly detect the email as a spam.
   
   
3. Email service provider settings
   In case you still cannot receive the emails after confirming the above, your email service provider may provide a virus-protection service or anti-spam blocking service by default. If you are using a business email, the settings might be applied on your company's email server.
   In the above cases, please contact your email service provider or your company's network administrator for the details.
   
   
4. Inbox
   If your inbox is full, new mail may not be accepted. Please make sure that your inbox has not reached its maximum capacity.