Attaching Archives to Email Messages in Outlook
PK Protect Attachments is a program that integrates with recent versions of Microsoft Outlook and automatically zips—that is, compresses and optionally encrypts and/or signs your email attachments when you send them. PK Protect Attachments is included with PK Protect and is installed by default.
Configure PK Protect Attachments in any of these places:
Inside PK Protect using the Mail options controls
Inside the message window in Outlook, using the toolbar buttons
See Working with Attachments in Outlook to learn more about using Attachments.