Virdi Advanced Mail Processor 

Vamp is an advanced and very versatile mail processor. You can extract and collate data from the message body, filter on any header field, send auto-responds, process web-forms, accept/reject mail from specified addresses, mail alerts and much more.
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Mailbox Verifier 

Small free software that will notify you about new messages arrived to your mailbox. The number of mailboxes MV can check is unlimited.
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