Spam Bully 3 for Outlook 

Outlook Bayesian spam filter. Allow/Block list. Bounce spam back to spammers. Report spammers. Forward only good email to your cellphone. Auto delete spam. Challenge emails. Stats. Convert the toolbar into your own language. Customizable.
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GFI MailEssentials for Exchange/SMTP 

Spam protection and email management at server level. GFI MailEssentials offers a fast set-up and a high spam detection rate using Bayesian analysis and other methods - no configuration required. Also adds key email tools to your mail server.
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Spam Bully 3 for Outlook Express 

Outlook Express Bayesian spam filter. Allow/Block list. Bounce spam back to spammers. Report spammers. Forward only good email to your cellphone. Auto delete spam. Challenge emails. Stats. Convert the toolbar into your own language. Customizable.
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Outlook Spam Filter 

Outlook Spam Filter is an easy-to-use MS Outlook add-on that protects your Inbox against spam. Bayesian filtering technology. Auto-learning Ability. Quarantined e-mails are stored in a separate SPAM folder. POP3, IMAP, HTTP and MS Exchange support.
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Express Plus 

Business email client can send personalized messages using mail merging, offers Bayesian SPAM and message filtering, shared mailboxes on a network, multiple address support and can read messages live on your server without downloading.
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SpamBrave for Outlook Express 

SpamBrave is an Outlook Express plug-in that adds intelligent spam filtering functionality. No need to buy an expensive e-mail client with a Bayesian anti-spam filter. From now on, you can train your Outlook Express to filter spam.
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