Many people ask customer service: what is the difference between an e-mail account and an e-mail address. The e-mail account is a physical location where you stored the leaves. The e-mail address is an identifier that tells what kind of physical location should be on the letter.

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So, we have enough one e-mail account and we can add more e-mail address!
The e-mail address is't stored locally but the leaves is stored of a particular web server. We can determine that the internet server's ID what e-mail addresses belong. Always we get POP3 or IMAP identification for e-mail account.