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Migration to Microsoft 365 with contentGATE

Migration of email archives to Microsoft 365
PST import to Microsoft 365 mailboxes
On-premises Exchange to Microsoft 365 migration
Restoring archives to Exchange Online
Restoring existing shortcuts ...
... and their replacement with original emails

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    1 bln+

    migrated items


    satisfied clients

    99,99+ %

    success rate of our migrations

    1 mln+

    emails migrated daily

    Migrate your archives to Microsoft 365 easily and securely

    If you have decided to move to Microsoft 365 and your email archives need to be migrated from an on-premises environment to the cloud, you need a system that can easily and securely handle the entire migration process. We offer an automatic, reliable, and globally recognised migration solution for more than 25 email servers and email archive source systems. Microsoft 365 is the #1 target destination of our clients. We support all versions of Exchange Server. You can transfer your live email mailboxes from providers such as Lotus Notes, Gmail or GroupWise, as well as email archives stored in Metalogix Archive Manager, Saperion ELM, Enterprise Vault, Dell EMC SourceOne, IBM ICC or others.


    With contentGATE, your migration runs according to your needs

    Get contentGATE to combine user-friendly functionality with great possibilities; it helps you in multiple migration scenarios. We ensure a direct connection between your data source and the target system. You will have full control over your migration process. contentGATE can restore all shortcuts from your existing archive or transfer them into a new environment. There is no downtime or interruption of service for your end users. You can make an easy switch between your source and target system in the background after the migration is complete. The migration process is planned and executed quickly; it is compatible with legal regulations in your company. The whole process is monitored and all results evaluated.

    We support migration from over 25 source systems

    Why is contentGATE your best choice?

    Secure and Reliable

    A controlled and automated way of migrating data to Microsoft 365 is provided by contentGATE. There is no data loss or inconsistency due to software or human errors, nor any downtime during the migration process. contentGATE collects all info about your migrated emails into a report. It migrates the whole archive and replaces shortcuts with original emails.

    Fast and Effective

    contentGATE provides a scalable way of migrating multiple mailboxes at the same time. In case of corrupted emails, incomplete content, disconnection from source system or other errors that may occur during your migration, contentGATE provides a great categorization mechanism. It prevents your target system from duplications of already migrated emails. There is no more unnecessary waste of your storage.

    Easy and Smart

    You can easily connect to your source system using contentGATE’s connectors. contentGATE reads the meta-data from the source database and connects to the Data Store, accessing archived emails. Now, you are just a few quick steps away from finishing your migration. This approach overcomes every source system's bottleneck by accessing the archive indirectly. Everything runs automated, controlled and secure.

    We stand by every client’s side as a partner

    There are many advantages with Microsoft 365, but planning the whole migration from an existing infrastructure to a cloud environment and all the processes involved is a huge challenge. Microsoft can help you to some degree by making things more understandable. You can read Microsoft’s numerous guides and try all available test tools. Or, you can choose contentGATE and do it the smart way.
    With hundreds of satisfied customers and with our experience in development and advanced technology of data migration between email archives and email servers from over 25 source systems, we proudly demonstrate our expertise. With over 20 years of experience in archiving data, your email archives are in safe hands with us.


    Case studies


    Soluvia IT Services in Mannheim were using Metalogix Archive Manager for many years. Due to its limitations, not supporting multiple sites nor being able to scale, they have decided to switch to contentACCESS. contentGATE was used to migrate more than 30TB and 150+ million emails. It was crucial that emails from both archives would stay accessible during the whole migration time. And this was possible thanks to our contentACCESS’s virtual migration capability, which allows all users to access the Metalogix archive exploiting a native access directly to the archive store and database.


    PPF was looking for a new email archiving solution with the ability to support Microsoft 365 (formerly Microsoft 365). A hybrid coexistence of the On-Premises and Cloud world, as well as mobile access to the archived emails, were neccessary. contentACCESS fulfilled all the requirements and provided PPF with even more benefits. Thanks to contentGATE, the former archiving solution 'Enterprise Vault' was migrated in few days, transferring more than 11TB and 30+ million emails.


    HKL Baumaschinen in Hamburg were facing a huge challenge. They had to decide between an update of their existing EMC Dell Source One email archive or the implementation of a better solution. Based on new archiving requirements, to have an automated, reliable, and secure archive, contentACCESS has been chosen as their destination and contentGATE became the best tool for this migration. contentGATE helped to migrate 4,6 TB of EMC Source One data and 24+ million archived items into contentACCESS. contentGATE was the best solution for migrating PST’s into contentACCESS while staying compliant to all regulations.


    The Coutts & Co Bank in Zürich has been planning the transition of Microsoft 365 (formerly Microsoft 365) for a long time. Prior to Exchange Online, an On-premises Exchange was used together with Saperion ELM email archive. Saperion ELM was used to offload emails from mailboxes, replacing emails with their shortcuts. The target was to fully reintegrate the original emails through their shortcuts back into Microsoft 365. Also the restoration of all archived emails was planned, migrating them back into Microsoft 365's live and archived mailboxes under a new folder. Using contentGATE, both goals were easily and quickly achieved.

    We support companies in many fields of their business

    Financial sector
    Production plants
    Logistics & transportation
    Government administration
    Educational system
    Telco and media


    Our satisfied customers

    Do you have further questions? Please contact us.

      Do you have further questions or any request? Leave us your contact details.

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      • What does the licensing price depend on?

        The migration licensing is based on the uncompressed data volume transferred via contentGATE into Microsoft 365.
      • What are the supported source systems?

        a. Metalogix Archive Manager

        b. Saperion ELM

        c. Veritas Enterprise Vault

        d. Mailstore

        e. IBM Content Collector

        f. EMC Source One / EMC Email Xtender

        g. d.velop d3

        h. Easy XBase / Easy for Exchange

        i. Quest Archive Manager
      • What are the supported target systems?

        a. contentACCESS On-Premise and Cloud

        b. Export MSG/EML Data

        c. Exchange Server – On-Premise and O365

        d. Outlook PST Data

        e. Enterprise Vault

        f. d.velop d.3

        g. Lexmark / Saperion DMS (ECM)

        h. enaio documents

        i. IBM FileNet
      • How much time does the migration take?

        Time of the migration depends on these specifications:
        a. Performance of the old environment – Store, Database and VMs performance,
        b. Where are we migrating to – Exchange is usually the bottle neck,
        c. Even the internet connection can play a role (connected to client’s location),
        d. Performance of the new (target) environment

        The best way to determine the migration speed is through a test migration / POC – prove of concept phase of the project.
      • What migration possibilities do I have?

        To migrate your data first, then shortcuts:
        In this strategy, the data are migrated in the background. User can access the data from the former archive until the new archive is switched to production. The shortcuts are migrated as soon as the switch is done. After that, the user can use all his new applications to access his archive. Conclusion:
        a. all data available, full-text search is ready (depending on target system),
        b. no time pressure,
        c. no risk of losing access to data.

        To migrate shortcuts first, then data:
        This strategy is useful if the new archive needs to be used immediately and the user wants to migrate emails that are already archived but still present in his mailboxes. The shortcut migration ensures that the active (live) data in mailboxes are migrated first. Emails or shortcuts, which are not active (live) in mailboxes, are migrated during the data migration. The emails that are already migrated through the shortcut migration are skipped during the data migration and no duplicates are created. Conclusion:
        a) The user can immediately use the new archive; live data are available in short time,
        b) More time is needed until the full archive is built (inactive data).

        It is also possible to apply different strategies for different users.
      • Can I run multiple migrations at the same time? Will I create duplicates if I run the migration multiple times?

        Yes, you can run multiple migrations at the same time, also from different sources - PST and Metalogix for example. contentGATE keeps a record of already migrated items, therefore no items are migrated twice.
      • Can I prioritize / select what users will be migrated at which point?

        Migration is group-based, and the migration group can contain any selected users. You can prioritize users by adding them to a migration group and starting their migration ahead of others.
      • Can I migrate deleted / inactive users?

        Yes, the inactive users can be migrated to the new target system /archive. The inactive users can also be exported to PST files, the folder structure will be kept.
      • How can I check if all the data has been successfully migrated?

        At the end of every migration, a migration report can be generated and compared with the prior generated archive size report. You can also run search queries within your report to find a proof of every migrated item.
      • How can I check my license usage?

        In contentGATE, there is an option to check the “License usage information” that will provide you with the exact license usage info.

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