Review : Stellar Converter for EDB – The Must-Have Tool for Seamless Mailbox Migration

Migrating mailboxes from on-premises Exchange to Microsoft 365 (Exchange Online) is one of the most common and critical tasks for IT admins today. However, handling large, offline EDB files can become a real bottleneck especially when time, performance, and precision matter.

That's where Stellar® Converter for EDB comes into play.

I recently had the opportunity to test this tool, and here's why it's now part of my top recommendations when planning or executing mailbox migrations.

What Does Stellar Converter for EDB Do ?

Stellar Converter for EDB is a powerful utility designed to convert offline or hosted EDB files into PST files with 100% data integrity. It also offers the ability to export mailboxes directly to live Exchange Servers or Microsoft 365, making it a practical tool for migrations or conversion.

Key Features I Tested

🔸 No File Size Limitation : Whether you’re dealing with small mailboxes or huge legacy EDB files, the application handles them without breaking a sweat.

🔸 Parallel Processing – Up to 8 Mailboxes at Once : Using multi-threaded technology, you can process up to 8 mailboxes simultaneously, drastically reducing the conversion time.

🔸 Direct Export to Microsoft 365 (Exchange Online) : One of the most valuable features you can export directly to Microsoft 365 mailboxes without intermediate PST conversion. This simplifies migration workflows significantly.

🔸 Mailbox Prioritization : Need to migrate key users first ? You can prioritize critical mailboxes while letting the rest continue in the background without impacting Exchange server performance.

🔸 Public Folder Support : Yes, it also supports public folders often forgotten but critical in legacy environments.

Why It Matters for Migrations

Migrating from on-prem Exchange to Microsoft 365 can be a complex, multi-stage process, especially when facing offline databases or environments that no longer have an active Exchange server. Stellar Converter for EDB allows you to:

• Export mailboxes from offline EDBs

• Bypass broken Exchange environments

• Selectively migrate mailboxes and public folders

• Maintain mailbox structure and fidelity during export

Real Screenshots

Here are some real screenshots I captured during my testing of the tool. You’ll see how intuitive and admin-friendly the interface is, along with the options available for precise mailbox selection, filtering, and export :

• Launching the application

• Importing EDB file

• You can preview and save emails and attachements.

• You can view and save calendar events.

By selecting "Save" option, you can see multiple option from saving as PST file to Export to Exchange Online.

• Multiple processeing window

• Exportation Completed

If you want to export directly to M365, you need to create Entra ID application and provide these informations :

Conclusion

Stellar® Converter for EDB is more than just a file conversion tool it's a comprehensive solution for Exchange mailbox migration, especially in complex or broken environments. Its ability to handle large EDB files, export directly to Microsoft 365, and maintain full data integrity makes it a must-have for any IT admin.

Whether you're dealing with legacy systems, planning a large-scale migration, this tool can save you hours of manual work while reducing risks of data loss or service disruption. I strongly recommend trying Stellar® Converter for EDB. It’s reliable, fast, and built with real admin needs in mind.

🔗 Learn more here: https://www.stellarinfo.com/email-repair/edb-pst-converter.php

Thanks

Aymen EL JAZIRI

System Administrator

Microsoft MVP