CheckMail 

CheckMail is a powerful POP3 email checking program, which notifies you when you have received new email. It allows you to check all your email accounts for new messages and preview or delete them before downloading to your computer.
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Complete Mail Server 

Complete Mail Server is high-performance professional SMTP/POP3 server software engineered for corporations and ISPs to satisfy business needs in ultra fast, flexible and reliable mail server. It works along with any email program or mailer.
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POP 'N' Check! 

POP 'N' Check resides in the system tray, checking your mail on POP3 servers on given intervals. It tells you when you've got new mail! Yay!
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Atomic Mailbox Password Cracker 

Atomic Mailbox Password Cracker is a software solution capable of recovering lost or forgotten mailbox passwords for the e-mail clients that work with mail servers using POP3 and IMAP4 protocols.
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POPcon PRO 

POPcon PRO connects MS Exchange to POP3+IMAP mailboxes. It retrieves messages from POP3 mailboxes and delivers them to your Exchange Server mailboxes according to the intended user found in the mails. It scans emails for SPAM and Virus content.
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POPcon 

POPcon connects MS Exchange to POP3 and IMAP mailboxes. It acts as an e-mail collector that retrieves messages from POP3 mailboxes and delivers them to your Exchange Server mailboxes according to the intended user found in the mails.
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