Exchange messages with PHS phones, mobile phones and e-mail compatible devices (e.g., PCs) beyond SMS character entry limit; attach media files. (Not available over PHS network.)
Exchange short messages with mobile phones using handset phone numbers as addresses. (Not available over PHS network.)
Gmail is Google's webmail service. Handset automatically syncs with Gmail.
Use Internet Mail (POP3/IMAP4/Exchange) on handset.