ShareMail 

One email box + ShareMail = email service for your entire network. ShareMail can expand ONE email account to several internal mailbox . It acts also as a local email server for intranet. Very suitable for small business. No domain needed.
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ShareMailPro 

Unique feature which can extend one mailbox to unlimited numbers with your domain, you can add or remove mailboxes at any time. No extra payment to your ISP for the mailboxes you add, perfect solution for small business.
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