Everything You Can Do with WholeClear

One powerful platform for email migration, conversion, backup, cloud transfer, contact management and mailbox maintenance.

6 powerful capabilities · Windows · macOS · Linux
01

Offline Mailbox & File Conversion

When you don't need cloud access but simply need to open an unsupported archive, file conversion solves the problem locally. Typical scenarios include accessing orphaned OST files in standard Outlook or turning Thunderbird MBOX files into standard PSTs.

  • Supported Desktop FormatsCross-convert PST, OST, EML, MSG, and MBOX archives without bouncing between multiple utilities.
  • Readable FormatsExport directly to searchable PDFs or raw HTML/TXT files for compliance and legal reviews.
  • Item-Level FilteringPreview and check off specific folders instead of converting the whole storage file in one go.
  • Preserved MetadataRetains email formatting, inline images, and attachments during the export pass.
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Conversion tools — open any product page

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02

Desktop-to-Cloud Migration

Directly push legacy desktop archives into live hosted accounts—eliminating the need for manual Outlook import wizards or intermediate scripts.

  • Target ServicesUpload straight to Microsoft 365, Google Workspace (Gmail), Yahoo, or any standard IMAP server.
  • Batch OperationsMove several user mailboxes in one scheduled run when a team is switching at the same time.
  • Zero Data Loss focusMoves folder hierarchies and attachments directly into the destination mailbox.
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Desktop-to-cloud migration tools

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03

Direct Cloud-to-Cloud Transfer

Built for domain migrations, tenant consolidations, and business mail provider changes where both accounts are already hosted online.

  • Direct Account LinkingConnect source and destination via secure app passwords / OAuth where supported.
  • Full Mailbox SyncTransfer entire inboxes, custom subfolders, and attachments between providers (for example, Google Workspace to Microsoft 365).
  • Granular ControlMove selected mail folders—or limit the job—to keep bandwidth and downtime under control.
See supported cloud pairs →

Cloud-to-cloud transfer tools

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04

Local Cloud Backup & Snapshots

Download and store local snapshots of hosted email accounts for offline recovery, audits, or offboarding employees. Once saved, those files stay readable even if the cloud account is later closed.

  • Broad CompatibilityPull data from Microsoft 365, Gmail, and standard IMAP setups.
  • Flexible Storage FormatsSave mailboxes locally as PST, EML, MBOX, or archived PDF packages—whichever fits the next step.
  • Independent AccessOpen and read backup files anytime without reconnecting to the cloud server.
Learn about cloud backups →

Cloud backup tools

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05

Contact & VCF Management

Keep contact lists clean and portable without interfering with email archives. This is especially useful when address books need a cleanup before a CRM import or phone sync.

  • Extract & ConvertTurn Outlook address books (PST/MSG) or Excel/CSV spreadsheets into universal VCF (vCard) files.
  • Split & CombineMerge multiple scattered vCard files into a single master contact book, or split large VCF files for mobile imports.
Manage address books →

Contact & vCard tools

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06

Outlook PST Optimization & Maintenance

See PST management tools →

Oversized PST files cause Outlook crashes and corrupted databases. These utilities help keep archives healthy before migration or long-term storage:

PST Splitter

Divide massive archives into smaller files based on size, date, or folder—so Outlook can open them reliably again.

PST Merger

Combine scattered yearly PST files into a single unified archive when you want one clean history.

Format Upgrades

Convert legacy ANSI PST files (2 GB limit) into modern UNICODE PSTs to prevent data corruption as the archive grows.

All WholeClear Product Pages

Every conversion, migration, backup, and contact tool has its own product page. Search or filter, then open the page — buy for Windows, Mac, or Linux.

Frequently Asked Questions

Yes. WholeClear lets you browse the folder tree and check only the folders you want to export or migrate.

Yes. Attachments stay linked to their original messages throughout all supported local and cloud jobs.

You can split oversized PSTs, merge multiple files into one, upgrade older ANSI formats to UNICODE, or convert PSTs to other standard file types.

It connects securely to your cloud mail provider, downloads the selected folders, and saves them locally in formats like PST, EML, MBOX, or PDF for offline use.

Yes. WholeClear runs on Windows 10/11, macOS 12 or later (Intel and Apple Silicon), and Linux x64 as AppImage and DEB packages.

Try WholeClear Free

Ready to test? Download the free trial for Windows, macOS, or Linux, or explore license options on our pricing page.

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