User manual

How WholeClear Migrator works

One product for mailbox files, desktop apps, and cloud accounts. Choose a source, preview, pick a destination, then convert or upload. All conversion features are included in Business and Enterprise.

Windows · macOS · Linux25-item demoAll features includedNSF conversion on Windows
Download the demoView Business & Enterprise

What Migrator does

Move mail from one format or account to another without buying a separate tool for each conversion. Use it when a team changes clients, consolidates mailboxes, or uploads desktop files to a cloud account.

Files, apps, and cloud

Convert PST, OST, EML, EMLX, MSG, MBOX, TGZ, and more. Connect Microsoft 365, Gmail, Google Workspace, Yahoo, Hotmail, or any IMAP account. Lotus Notes NSF conversion is available on Windows.

Guided interface

The same four-step flow on every platform: source, Data Explorer, destination, then Convert Now or Upload Now. Preview before you commit.

One license scope

Business is one organization, one location, one platform per purchase. Enterprise includes Windows, macOS, and Linux and may be used across multiple units. Every conversion feature is in both.

The four-step workflow

No separate product per format.

01SourceBrowse files or a folder, or connect Microsoft 365 / IMAP.
02Data ExplorerPreview folders and messages before you convert.
03DestinationChoose a file format, mailbox, or cloud account.
04ConvertSet the output folder, then convert selected or convert all.

System requirements

Install the build that matches the computer you will run. NSF conversion is Windows-only. Business buys one platform; Enterprise includes all three.

Windows

  • Windows 10 or Windows 11 (32-bit and 64-bit)
  • 1 GHz processor (2.4 GHz suggested)
  • 512 MB RAM (1 GB advised)
  • 100 MB for the application, plus space for output files
  • Run as Administrator when prompted

macOS

  • macOS 12 or later
  • Intel and Apple Silicon
  • 1 GHz processor (2.4 GHz suggested)
  • 512 MB RAM (1 GB advised)
  • 100 MB for the application, plus space for output files

Linux

  • Linux x64
  • 1 GHz processor (2.4 GHz suggested)
  • 512 MB RAM (1 GB advised)
  • 100 MB for the application, plus space for output files
  • NSF conversion is not available on Linux

Download and install

Get the installer from the download hub, then launch Migrator from the desktop shortcut or Applications folder.

Step 1

Install the application

Download WholeClear Migrator for your platform and complete the installer. Use the Windows, macOS, or Linux build that matches the computer.

WholeClear Migrator installer
Step 2

Launch Migrator

Double-click the WholeClear Migrator icon to open the guided interface.

Launch WholeClear Migrator

User interface

The first screens ask for a source, then files or a folder, then the destination.

Step 3

Choose the mail source

Select the format or account you want to convert — for example EML, EMLX, PST, OST, MSG, MBOX, TGZ, NSF, Microsoft 365, or IMAP — then click Next.

Choose the mail source in WholeClear Migrator
Step 4

Select file or folder mode

Pick File or Folder mode, click Browse to add items, review the list and count, then click Next.

Select file or folder mode
Step 5

Select the destination

Choose a file format (MSG, HTML, PDF, and others), a desktop application (Outlook, Lotus Notes), or a remote server (Gmail, Yahoo, Hotmail, Microsoft 365, IMAP).

Select the destination file format or application

Destination options

The last screen changes with the destination you picked. Convert Now writes files locally. Upload Now sends mail to a cloud or IMAP account.

Outlook PST and Lotus Notes NSF

Save as a mailbox file

  • Choose the destination format and click Next.
  • Click Browse and set the folder for the output file.
  • Click Convert Now to start the migration.

Lotus Notes NSF conversion is available on Windows.

Export mailbox data to PSTExport mailbox data to NSF on Windows
HTML and PDF

Save as documents

  • Click Browse and choose where to save the files.
  • Use Save Attachments if you want attachments written next to the messages.
  • Click Convert Now.
Convert emails to HTMLConvert emails to PDF
Remote servers

Upload to a cloud mailbox

  • Enter the account username and password, then click Authenticate User.
  • Select an existing folder or create a new one.
  • Click Upload Now.

Credentials are used only for this task and are not stored in the application. For Microsoft 365, sign in with Microsoft. For Gmail and Google Workspace, use an App Password when the account requires it.

Upload emails to Google Workspace
IMAP account

Upload to any IMAP server

  • Enter the host address plus the username and password.
  • Choose a folder or create a new folder.
  • Click Upload Now.
Upload emails to an IMAP account

Demo limit: the trial converts 25 items. Features match the licensed product. A Business or Enterprise license removes the 25-item cap. There is no file-size limit on licensed conversion.

Related resources

Product page, licenses, and the download hub.

Business & Enterprise pageOrder MigratorFree demoInstall & uninstall

FAQ

How the workflow, platforms, and demo fit together.

Install and launch Migrator, choose a mail source, preview files, pick a destination, then convert locally or upload to a cloud or IMAP account.
Yes. It runs on Windows 10/11, macOS 12+ (Intel and Apple Silicon), and Linux x64. Lotus Notes NSF conversion is available on Windows.
Yes. The demo converts 25 items with the same features as a licensed copy. A Business or Enterprise license removes that limit.
Both include all conversion features. Business is for a single organization at one location, one platform per purchase. Enterprise includes Windows, macOS, and Linux together and may be used across multiple units.

Ready to run it on the organization license?

All features included. The demo converts 25 items. Enterprise covers Windows, macOS, and Linux in one $999 purchase.

Buy Enterprise — $999Try the 25-item demo