Should be 320 characters:
Ref1: http://stackoverflow.com/questions/386294/maximum-length-of-a-valid-email-id
Ref2: http://askville.Amazon.com/maximum-length-allowed-email-address/AnswerViewer.do?requestId=1166932
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email address composition
Email address are not given out by Wiki.
see my profile for the email address
rod blagojevich's email address NA
E-mail address of celebrities are not told publicly,they have a secret email address.