Starting today, Gmail’s migration tool for messages and contacts is being removed. This tool was primarily used by new Gmail account holders who wished to import mail and contacts from another email provider into their Gmail accounts. We are exploring new long-term solutions, but in the meantime users can still import mail and contacts to their Gmail accounts. Messages can be imported using Mail Fetcher and Contacts can be imported from CSV files.

Editions included: 
Google Apps for Business, Education, and Government

For more information:
http://googleappsupdates.blogspot.com/2012/10/import-emails-and-contacts-from-other.html
https://support.google.com/mail/answer/164640
http://support.google.com/a/bin/answer.py?answer=1041297

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