WinZip Courier Key Features
This simple tool blends seamlessly with your email/webmail system to provide you with faster email delivery, smaller storage usage, and enhanced email protection. Send files to coworkers, friends and family with fewer issues—all with the proven power of WinZip!
Buy Courier 3.5 Now!
Download Courier 3.5
Zip email attachments automatically
Courier automatically zips your outgoing email attachments, allowing you to send files faster, more reliably, and more securely using your own customized preferences. These preferences include:
Custom file extensions – Send blocked Zip files by automatically changing their file extensions.
Compression methods – Choose Zipx: Best method compression to produce our smallest compresssed file size to date. Alternatively, choose Zip: Legacy compression for compatibility with older Zip programs.
Image resizing – If you enable automatic image resizing, Courier will first resize your pictures to fit standard computer screens then zip and send them—all with one click! This ensures that your photos and other image files are delivered in the fastest, most reliable, and most accessible way.

NEW! Send email attachments via ZipSend
WinZip is proud to offer access to our innovative file delivery web service, ZipSend! ZipSend blends seamlessly with Courier's file sharing functionality to boost your emailing power. Now you can use Courier to zip and send large files (up to 2GB) without worrying about bounced emails or clogged servers!
Learn more about using ZipSend to transfer large files >>
Try ZipSend today! Sign up FREE >>
Protect your email attachments
Select Courier’s file encryption capability to password-protect your attachments from unauthorized access. Courier offers manual and automatic encryption options, allowing you to choose how hands-on (or hands-off) you would like the zip/encrypt process to be.

Preview email attachments
Want to know what’s in a zipped email attachment before you open it? Courier provides you with an instant view of the contents of zipped attachments directly in the Outlook preview pane. When previewing an email that includes a Zip file attachment, simply click on the Zip file’s icon displayed in the email’s header. Courier will display an expanded list of the file’s contents using a simple tree structure.

Want to unzip and open a specific file in the preview tree? Simply double-click directly on the file to open it with its associated application for viewing, editing or saving!
Did you know? If you're running Windows 7 or Windows Vista, Courier also allows you to preview and open the contents of Zip files directly from Windows Explorer.
Enjoy seamless integration with Microsoft Outlook and Microsoft Office
Once installed, Courier blends seamlessly into your system so that you can start enjoying its functionality immediately, without having to learn any new technology or open any additional applications.
Microsoft Outlook toolbars
Simply launch Outlook and start writing emails! Because Courier automatically populates the Microsoft Outlook interface with easy-to-use buttons, you can simply modify your zipping preferences as you work!
- Enable/disable automatic zipping by toggling the Zip Attachments button.
- Enable/disable encryption by toggling the Encrypt button.
- Send large attachments via ZipSend by clicking the Attach Large File button
- Automatically resize a collection of images before sending them by clicking the Resize Images button.
- Manage your Courier and ZipSend preferences directly from the ribbon interface.
Courier seamlessly populates the Microsoft 2010 and 2007 ribbon, providing you with instantly recognizable access to Courier functionality:


In Microsoft Outlook 2003, Courier builds its own toolbar so that these same features are just a simple click away, available every time you compose a new message.
Working with Word, Excel, and PowerPoint
Zip and email files while you work! Courier integrates with Word, Excel and PowerPoint so that you can compress, encrypt, and send open documents directly from within their associated applications. Simply select File > Send to > Mail Recipient (as a Zip file), and let Courier walk you through the process without ever leaving the application!
Want to learn more? Check out What's New in Courier 3.5!

