Vote for Exclaimer Mail Utilities for Exchange

Add legal disclaimers and signatures to your email: Attach text and images to any incoming, outgoing or internal email. Add standard legal disclaimers to every outgoing email, or make professional-looking email with company logos and colors. Additionally, using fields from the Active Directory, the added text can automatically be personalized. Monitor and archive your internal and Internet email: this feature allows copies of incoming outgoing or internal email to be invisibly sent to a specified mailbox. Auto-responder: Set up automatic server-based replies to emails. These can be simple out-of-office notifications or automated replies to email queries, complete with file attachments and full HTML formatting.

Mail blocking and redirection: Block or redirect email before it reaches the intended recipient. By integrating with the Active Directory, and with a rule-based system, you can change the behavior of each feature based on the senders and recipients.