Gmail features more than 2.8 GB of email storage space, which still keep increasing, conversation-based thread view of email address, advanced Google search functionality on Gmail emails, advanced virus and spam protection, auto-save, offline access to Gmail contents, Blackberry compatible Gmail Mobile for access via mobile devices, free POP access, free automatic forwarding, retrieve mails from other email accounts with Gmail Mail Fetcher, customized ‘From:’ address, and many more.
Gmail is available in 40 languages including US and UK English, simplified and traditional Chinese, Arabic, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Tagalog, Thai, Turkish, Ukrainian, and Vietnamese.
Sign up for Gmail at http://mail.google.com/mail/signup. No invite or invitation is needed.