Mail Merge Sender is a powerful and easy-to-use Microsoft Outlook Add-In for sending personalized email messages to a great number of email addresses, distribution list and mailing list using Microsoft Office Outlook 2007 and 2003. The software will send every recipient a unique personalized email message without any other recipients' names and email addresses. There is only one email address of the recipient's in the email heading. It means the email will NOT be blocked by SPAM filter of the recipient's, and the recipient only see his or her name and email address in the email message. The important email addresses of your recipients will NOT be leaked out.