Model Viewer for Outlook

Non-engineering teams constantly receive CAD attachments they can’t open or understand. Model Viewer for Outlook lets anyone preview 2D and 3D models, inspect properties, and understand what’s inside - all without leaving Outlook or installing CAD software. Reduce back-and-forth with engineering and respond to customers faster.

Perfect for

• Sales, account managers, and customer success working with technical quotes

• Purchasing and procurement reviewing supplier CAD files

• Project managers coordinating design changes with external partners

• Executives who want a quick visual check without opening a CAD workstation

Key capabilities

Open 70+ CAD formats directly from Outlook

• AutoCAD, Inventor, SolidWorks, CATIA, Creo, Siemens NX, Solid Edge

• STEP, IGES, Parasolid, ACIS, JT, STL, OBJ, 3MF, and more

Explore 3D models effortlessly

• Zoom, pan, rotate, section, and isolate parts

• View assemblies and sub-assemblies where supported

Understand models without engineering tools

• Inspect bill of materials (BOM)

• View part metadata and properties (material, dimensions, etc.)

• See preview thumbnails for multiple attached models

Boost productivity in Outlook

• Works with both incoming and sent emails

• Pin the viewer while working across multiple emails

• Copy essential model info directly into your email reply

• No downloads or desktop CAD installations required

Secure and cloud-powered

• Rendering handled securely in the cloud

• No CAD files stored on local devices

• Built for Microsoft 365 compliance and data security expectations

How it works

1. Install the add-in from Microsoft AppSource.

2. Open any email containing CAD attachments.

3. Click the [Your app name] button in Outlook’s command bar.

4. Choose the file to load and explore the model directly in the panel.

Requirements & licensing

• Requires an active Model Viewer for Microsoft 365 subscription (Free tier available; Pro unlocks unlimited previews).

• Supports Outlook on the web, the new Outlook for Windows, and Outlook for Mac.

• Outlook mobile support will be enabled as Microsoft expands add-in compatibility.

• No CAD/CAM desktop license is required to preview supported formats.