FAQs and Inquiries

About joining

Are there any email addresses that cannot be used for registration?: Email addresses such as 【AOL】【tac-net.ne.jp】【i-younet.ne.jp】 cannot be registered due to their unique environment.

Furthermore, the following services are generally unavailable because they do not comply with the globally recognized internet communication standard, RFC (Request for Comments).

▼Email addresses that do not comply with RFC standards
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1. If the symbol contains any symbol other than "-", "_", ".", "+", "?", or "/"

2. When two or more symbols are used consecutively.

3. When symbols are used at the beginning and end (immediately before @)

4. If the part before the @ is 64 characters or longer.

5. If the entire email address is 256 characters or longer.
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If your email address contains the string in question, please register again using a different email address.

▼【icloud.com】domain address
Due to Apple's regulations, emails sent from this site may be deemed "emails that violate Apple's local policies" and may be rejected.

We do not recommend using this site.

* We recommend registering with a free email address such as [gmail.com] or [yahoo.co.jp].