MailZip Pro is a plug-in for Microsoft which allows you to manage e-mail attachments. It can archive automatically attachments in the outgoing e-mails and unpack archives in the incoming messages. Moreover, it can also open or record the hidden attachments like an image file in an e-mail. The aim of this is to simplify file e-mailing especially when it is a big one. Moreover, it can also compress your text files in ZIP archive for easy transfer. As Outlook blocks doubtful files which may contain virus or malicious programs, you can also use MailZip Pro to unlock them. With this software, you can add passwords to your archives in order to be sure that only the recipients can view them.