To users of free Email such as Yahoo! mail, hotmail or forwarded email.

Automatic return email from us may not be send if you use free email. non-free email is recommended.
If return mail is not sent to you even after the following business day, please make sure the followings.

Potential reasons you cannot receive the mail

1) Return email may be treated as a junk email.

If the system is set to sort any junk mails automatically, our mail might be placed in a junk mail box. In such cases, you can not receive our email.

Please check you junk mail box or trash box.
*If removing our email address ( including domain : yuken-ind.co.jp) from junk mail list, you can receive ours from the next smoothly.

2) Your incoming mail box is full.

New email can not be received after its capacity is full. Please delete unnecessary mails or mails in a trash box to protect ours from automatic deleting.

3) Your cell is set to transfer email.

Please set your cell to receive free internet email if possible.

4) Your email address is wrong.

Automatic return mail is not be sent correctly. Please recheck it, specially, domain .
( example: ***@hotmail.com / ***@yahoo.co.jp)