WinZip Companion for Outlook makes it easy to zip your e-mail attachments, saving transmission time and disk space for both the sender and recipient. The Companion works the way you want it to; it can automatically zip your attachments, ask whether or not you want them zipped, or let you zip and attach files manually with just a few mouse clicks. And, if your attachments are sensitive, you can easily protect them with advanced AES encryption.
Free download