All keitai in Japan can receive e-mail from the Internet. However, there are generally limitations that are not present with regular e-mail, and there are also different kinds of keitai e-mail.
docomo
All docomo handsets have the ability to send and receive Email.
Docomo has a short message service (which costs money) and a free message service (where you can receive short advertising messages without charge) that are entirely separate from the iMode e-mail service, and should not be confused with it.
iMode e-mail addresses always end in @docomo.ne.jp, unless your keitai is set to go through an alternate data carrier (a rare occurrence). The maximum length of an e-mail address that most, if not all, phones can deal with is 50 bytes; anything after that will be truncated on receipt, and cannot be entered into the phone when sending.
au
All email addresses are of the form xxxx@ezweb.ne.jp.
SoftBank
Because of SoftBank's history, there are several different patterns for SoftBank handsets.
Mobile Address Patterns
List of mobile addresses:
- docomo.ne.jp
- ezweb.ne.jp
- softbank.ne.jp
- d.vodafone.ne.jp
- h.vodafone.ne.jp
- t.vodafone.ne.jp
- c.vodafone.ne.jp
- k.vodafone.ne.jp
- r.vodafone.ne.jp
- n.vodafone.ne.jp
- s.vodafone.ne.jp
- q.vodafone.ne.jp
- disney.ne.jp
- willcom.com
- pdx.ne.jp
- wm.pdx.ne.jp
- dj.pdx.ne.jp
- di.pdx.ne.jp
- dk.pdx.ne.jp
iPhone:
- i.softbank.ne.jp
Bulk Mail
ASPs
- Claims to be able to send 1,000,000 mails per hour to mobile.
