There may be cases where we are unable to resolve the issue of non-delivery of emails on our own.
We apologize for the inconvenience, but please check the following.

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● Domain-specific reception settings are blocking
【plusmember.jp】【phantomsiita.com】Please be sure to set your email settings to allow receiving emails from this domain.
Please contact your email address provider (your mobile phone company/shop) for confirmation and setup instructions.

★For those using carrier addresses
Each mobile phone company has set a high standard for spam prevention measures, which has resulted in a large number of cases where emails are not delivered.
Even if you are not aware of any measures to prevent spam mail, please be sure to check and set them up.

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●For those using docomo addresses
Please refer to the following website for how to check if an email has been identified as spam.
»For those using the standard iPhone email app
»For those using the Docomo Mail app on an Android smartphone
*Redirects to docomo website

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●For those using au addresses (ezweb.ne.jp / au.com)
If your "Spoofing Protection" is set to "High", your email may be blocked.
Please set it to "Medium" or lower, or cancel the setting.

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● For those using SoftBank addresses (softbank.ne.jp / i.softbank.jp)
If your spam filter is set to "strong", the email may be blocked.
Set it to "Standard" or "OFF".

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●For those using iCloud addresses
Depending on the system status of your iCloud mail, receipt may be delayed or may not be delivered at all.
Please also check that the email has not been sorted into your spam folder.

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●For those using iCloud addresses, free addresses (gmail/yahoo), or PC addresses
It may have been automatically sorted into your "Spam" or "Promotions" folder.
Please check beyond your inbox.

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● Check if the capacity is exceeded
You may not be able to receive emails if your mailbox or smartphone capacity is exceeded.

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■ The email address contains a character string that is restricted from use.
If you are using an email address that contains the relevant string, please register again using a different email address.
For example, a series of dots (.....), a series of symbols (_-_), a dot or symbol immediately before the @ symbol (.@), a symbol at the beginning (-abc), etc.

The following types of email addresses are generally not accepted as they do not comply with the global Internet communication standard RFC (Request for Comments).

<Non-RFC compliant email address>
1. If symbols other than "-", "_", ".", "+", "?", and "/" are included
2. When two or more consecutive symbols are used
3. When symbols are used at the beginning and end (immediately before @)
4. If the part before the @ is 64 characters or more
5. If the entire email address is longer than 256 characters

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Check the email app
Please check that your email app is set up correctly to receive emails.
*If you have any questions regarding the settings for your email app, please contact your mobile phone carrier.

<For iPhone users>
There are two types of email sending and receiving apps: "Mail (standard email app)" and "Messages (MMS email)."
When using the "Messages (MMS Mail)" function, due to the specifications of your iPhone, you may not be able to receive emails properly.
Please use "Mail (standard email app)".

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●Other
Please change your settings so that you can receive emails from PCs and emails with URLs.

Depending on the email client or email app you use, related emails may be displayed together as a thread.

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