How to open Lotus Notes mailboxes on IE web browser?

Available on Windows, macOS, and Linux.

WholeClear Support · Last updated: August 26, 2026

Opening Lotus Notes mailboxes on Internet Explorer is directly not possible without exporting Lotus Notes mailbox items to MHTML format. To complete the migration, we have provided a swift solution here. Get the complete process of migration here.

No manual solution is available by which one can directly open Lotus Notes mailbox on Internet Explorer. Therefore, we have come up with an alternate solution whose download link is mentioned above. Users can simply install the application and perform the conversion task easily without facing any kind of issues. Both technical as well as non-technical users can effortlessly manage the conversion with the simplified interface of the application.

Step by step guide to open Lotus Notes mailboxes on IE Web browser

Step 1. Launch WholeClear NSF to MHTML Converter on your Windows system.

Step 2.Select Lotus Notes File (.nsf) as the source and click Next. Click Next: Data Explorer.

Step 3.Choose Browse files... or Browse folder... and load NSF files to the software panel using the Browse button. Then click Continue to Destination.

Step 4.Select Convert to MHTML format and press the Next button.

Step 5. use the Browse output folder button and mention an output directory where you want to save MHTML files.

Step 6. Place the mouse cursor to Convert selected button and this will start the conversion task.

This is how one can get MHTML files from Lotus Notes NSF file. By this, users can simply open the files on Internet Explorer. This software solution is widely used by users without facing any kind of difficulty.

Note: Install Lotus Notes email client in your system before starting the conversion task. Without installation of IBM Notes, the conversion task can’t be completed.

Note: The wizard is Source → Explorer → Destination → Convert. After choosing the source, click Next: Data Explorer. Add data with Browse files... or Browse folder..., then Continue to Destination. On Convert, use Browse output folder and start with Convert selected when Ready Check is green. The demo processes up to 25 items.

Winding Up

Using this software approach, one can easily get MHTML files from Lotus Notes NSF. The tool assures safe conversion without damaging or modifying the original files. To understand the software before purchasing it, download demo edition and export 25 items using it. Once you get the licensed edition, freely export unlimited Lotus Notes files.