ZipMail - Client Version 12 for Microsoft Outlook

Automatic Zip Compression and Decompression

Native Optimization

Automatic Picture File (JPG, GIF, PNG, BMP, EMF, WMF, TIF)
Native Optimization

On-Demand Single-Click On-The-Fly PDF Conversion

for your Microsoft Outlook attached files



Automatic and transparent on-the-fly Zip compression and decompression for Microsoft Outlook attached files.
Standard and AES-256 Zip password-based encryption and decryption for Microsoft Outlook attached files.


Automatic and transparent on-the-fly native XML volume optimization for Microsoft Outlook Office 2007, 2010 and 2013 XML attached files (DOCX, PPTX, XLSX files) and Open Office XML attached files (ODT, ODP, ODS files).


On-demand single-click on-the-fly PDF conversion for Microsoft Outlook attached files.


Automatic and transparent on-the-fly native volume optimization for Microsoft Outlook attached picture files (JPG, GIF, PNG, BMP, EMF, WMF, TIF, TIFF). Also applies to copied and pasted images.

With its new, astounding and unique abilities to reduce the volume of the attached MS Office XML files (DOCX, PPTX and XLSX), Open Office XML files (ODT, ODP, ODS) and of the picture files (JPG, GIF, PNG, BMP, EMF, WMF, TIF, TIFF), while keeping them in their native formats, ZipMail V12 achieves unbelievable email volume reduction results never seen before, while remaining fully transparent to the Microsoft Outlook users and their email recipients.

With its new single-click PDF conversion feature, ZipMail V12 enables all Microsoft Outlook users to drastically improve their email usage in terms of attached files sent for read-only purposes.


Each time a user attaches files in Microsoft Outlook, ZipMail automatically and transparently reduces the size of the attached files by performing on-the-fly Zip compression, XML (DOCX, PPTX, XLSX, ODT, ODP, ODS) optimization or Image ((JPG, GIF, PNG, BMP, EMF, WMF, TIF, TIFF) optimization. Copied and pasted images are also optimized. (An optional user interface can be displayed enabling to resize or rotate the image or to select only a given area to paste).

Since attached files are responsible for up to 95% of most of email traffic (and thus storage), ZipMail will reduce your needs for Microsoft Exchange / Outlook related network bandwidth and disk space by 50% or even more.

ZipMail also provides on-demand single-click on-the-fly attached file PDF conversion, enabling Microsoft Outlook users to prevent easy modifications of their attached files by their recipients.

ZipMail, by transparently making Microsoft Outlook attached files as small as possible, at the time they are attached by the users, delivers the following benefits:

  1. Instant source reduction of your email traffic by 50% or more.

  2. Huge network bandwidth and Exchange server disk space savings.

  3. Very significant performance improvements for your entire Microsoft Exchange organization with faster Send-Receive operations (greatly improving Microsoft Outlook user satisfaction).

  4. Hosting more users on your existing Microsoft Exchange infrastructures.

  5. Enable your Microsoft Outlook users to send very large files that could not be sent if not compressed or optimized (for instance large PPT / PPTX MS PowerPoint presentations or DOC / DOCX MS Word files exceeding the maximum allowed attached file size).

  6. Huge and recurring Microsoft Exchange operating cost reductions. Your savings increases whith the increase of your email traffic. If in three years from now your yearly email traffic and needs for email storage double, the savings delivered by ZipMail will double too.

  7. ZipMail enables you to defer heavy investments in network bandwidth and storage extensions for your Microsoft Exchange infrastructure.

  8. ZipMail pays for itself within months.


More Details:

All of the multi-year experience of MK Net.Work in a single 400 Kb DLL file!

ZipMail benefits from the multi-year experience of MK Net.Work in providing advanced compression and optimization solutions for enterprise email platforms since 1995 (more than 6 million users worldwide)
ZipMail client is a pure client software, there is nothing to install on your Microsoft Exchange servers.

Transparent and instant Zip compression, XML optimization and image optimization for Microsoft Outlook attached files

Attach your files as usual, click the Microsoft Outlook paperclip button or drag and drop files to your Microsoft Outlook emails, your selected files get instantly compressed into Zip files or, for DOCX, PPTX and XLSX, XML optimized or, for picture files, natively optimized, before being attached. All is automatic, no additional action is required, your original files, in your disk folders, remain untouched.

Single-click PDF conversion for Microsoft Outlook attached files

Attach your files as usual, check the PDF checkbox displayed in the Microsoft Outlook attached file selection dialog, your selected files get instantly converted to PDF before to be attached!
(Your original files, in your disk folders, remain untouched).

Extensive support of Drag & Drop

Drag & drop files and folders on your Microsoft Outlook emails, they all get instantly Zip-compressed or XML / Pict optimized by ZipMail before to be attached!
(Your original files, in your disk folders, remain untouched).
When dragging and dropping folders, the relative paths of the dropped files are embedded in the resulting Zip file, enabling your recipients to reproduce the original folders when decompressing the Zip file.

Transparent and instant decompression of the Zip attached files

In Microsoft Outlook, you View - Launch - Save your Microsoft Outlook attached Zip files transparently, as if they were not compressed.

Zip standard and AES Encryption and Decryption

ZipMail Client for Microsoft Outlook provides the full support of the Zip standard encryption and of the AES (AES 128, AES 192 and AES 256) encryption.
ZipMail can be configured to display a password field in the attached file selection dialog of Microsoft Outlook, enabling the users to optionally password-protect and encrypt their compressed Zip files. Password rules can be defined to force the users to enter passwords having a minimum length and including a minimum number of numeral digits.
When opening a Zip encrypted attached file (whatever is its encryption type), the ZipMail transparent decompression feature displays a dialog enabling the user to enter the Zip file password. Access to the encrypted Zip file is granted only if the right password is provided.

Make ZipMail work exactly as you want

More than 130 optional parameters are available to make ZipMail work exactly as you want.
all ZipMail features (Zip compression and decompression, XML optimization, Pict optimization and PDF conversion) can be finely tuned.
These parameters are optional. If you are satisfied with their default values and with the default behavior of ZipMail, you do not have to know anything about them in order to work with ZipMail.

This extended and very powerful ZipMail option set is the translation of our multi-year experience in groupware and email compression software.
It is like a library of the answers delivered to the technical, functional and ergonomic questions asked by our ZipMail customers since 1995.

ZipMail is delivered with an extensive help file for administrators in HTML Help and PDF format. Each of the ZipMail features and options is described in detail in this more than 182 page help file. Here again, fortunately, you do not have to read this Help file in order to use ZipMail! But in case you want to change an option or to learn more about one of the product features, you will really appreciate to quickly find a detailed answer to your question in this document.

True multilingual software

ZipMail is true multilingual software.
There is a single version of the ZipMail program for all of the languages.

The ZipMail translations are stored in the ZipMail parameter file (not in the program itself). This simplifies the maintenance of the software and makes the production of new translations very easy (customers can even create new translations by themselves!).

ZipMail is delivered with the support for English, French, German and Spanish. Other languages can be very quickly added on demand.
ZipMail language is set automatically depending on the language of the operating system.
If no translation is provided, the default language of ZipMail is set to English.

ZipMail has been fully tested and is 100% compatible with double-byte alphabets like Japanese, Chinese, Greek etc...

The same version of ZipMail works with any version of Microsoft Outlook in any language, with no need for any particular setting.

ZipMail Security Pack

ZipMail includes the ZipMail Security Pack to protect your users against the execution of unsafe Microsoft Outlook attached files (compressed or not compressed) like .EXE, .BAT, .VBS, etc.
You can define your own list of unsafe file types (a complete list of unsafe file types is provided in the ZipMail help file).
There are 3 different levels of protection against the execution of unsafe files.
The ZipMail Security Pack also enables you to forbid the attachment of some file types. If your users try to attach such files (compressed or not), a dialog will be displayed and the attachment will be cancelled. You can define your own list of forbidden file types.

Superfast and easy deployment

The cumulated size for all ZipMail installed components is under 5.1 MB.
All of the ZipMail components are installed in the ZipMail program folder by a MSI setup package specifically optimized for massive deployments.
The size of the ZipMail V12 MSI package is under 3.1 MB
We can customize the ZipMail MSI package with your preferred ZipMail parameter values.
ZipMail deployment assistance and setup package customization are included in your annual support contract.


Download the ZipMail V12 for Microsoft Outlook PDF Brochure:

ZipMail V12 for Microsoft Outlook brochure

 ZipMail V12 for Microsoft Outlook - PDF Brochure


Evaluation Copy - Try ZipMail for yourself!

Please don't hesitate to see for yourself, get a fully functional evaluation version of ZipMail V12 for Microsoft Outlook.
It takes only 2 minutes to install and start compressing, optimizing or converting to PDF your Microsoft Outlook attached files!

Kindly contact us if you have questions, we'll be most pleased to answer.

Domino Server Consolidation

Avoiding Domino Server Consolidation Network Bandwidth Nightmare