Mail Filtering - http://www.roaringpenguin.com/solutions
Roaring Penguin Software, the email filtering experts, develops anti-spam and email protection software for education, internet service providers, web Hosting and managed service providers.
Outlook Synchronisieren - http://www.easy2sync.de/de/produkte/e2s4o.php
We offer an easy to use solution to synchronize e-mail between multiple computers. Works with Outlook PST files and / or Exchange accounts. Synchronizes e-mails, contacts, calendars, tasks and notes, available in German and English.