If it is possible email have backup copies own its server?

mean,the message should appear in my inbox is also have back up copies on server? if it is possible so give the link of server.

If it is possible email have backup copies own its server?
Here's a link to a Yahoo! Mail Errors and Problems Reporting.


http://help.yahoo.com/l/us/yahoo/mail/ya...





Here's a link to a Yahoo E-Mail Help Request Form:


http://help.yahoo.com/l/us/yahoo/mail/ya...





Use this form to report incidents of abuse or harassment.http://help.yahoo.com/l/us/yahoo/mail/ya...

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