Dev tools · alternatives · 2026

24 alternatives to OST emails to Office 365

export OST to Office 365

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. OST emails to Office 365 launched in 2022; newer entries below may have overtaken it.

1. 1
   OST to Office 365 Converter▲7

   OST to Office 365 Converter to convert OST to Office 365

   2023 · its alternatives →

2. 2
   Office 365 Migration Tool▲64

   Backup tool for exporting Microsoft 365 mailbox data

   2022 · its alternatives →

3. 3
   MailsDaddy PST to Office 365 Migration▲2

   Fatest and safe solution to import OST file into Office 365

   2023 · its alternatives →

4. 4
   O365 Tenant to Tenant Migration Tool▲92

   Sysinfo Office 365 tenant to tenant migration tool

   2023 · its alternatives →

5. 5
   Office 365 Export Tool▲2

   To export Office 365 emails to various file formats

   2023 · its alternatives →

6. 6
   DRS Softech Microsoft 365 Backup Tool▲11

   One Click to Backup, Migrate, and Protect Office 365.

   2025 · drssoftech.com · its alternatives →

7. 7
   Sysinfo OLM to Office 365 Migration Tool▲2

   OLM to Office 365 Migration Tool Migrate OLM to Office 365.

   2023 · its alternatives →

8. 8
   Exchange to Office 365 Migration▲6

   Tool allows migrating Exchange Server to Office 365.

   2024 · its alternatives →

9. 9
   DRS Yahoo to Office 365 Migration▲11

   Seamless Yahoo to Office 365 Email Migration Tool

   Oct 2025 · drssoftech.com · its alternatives →

10. 10EM
    Export Mail for Microsoft Outlook for Mac▲46

    2021 · exportoutlookmacmail.com · its alternatives →

11. 11
    Export Mailbox to PST from Office 365▲8

    Effortlessly Export Your Office 365 Mailbox to PST on Window

    2025 · its alternatives →

12. 12
    MigrateEmails PST Migration Tool▲2

    Efficient tool to Migrate PST files to Office 365 Precisely.

    2023 · its alternatives →

13. 13
    OLM Converter▲55

    Optimum tool to convert OLM file without losing any data

    2022 · its alternatives →

14. 14
    DRS Softech MBOX to Office 365 Migration▲7

    Fast & Secure MBOX to Office 365 Migration Made Easy

    2025 · drssoftech.com · its alternatives →

15. 15
    BitData Migration PST Converter▲8

    Export & convert Outlook PST file to multiple formats

    2024 · its alternatives →

16. 16
    Kernel Export Office 365 to PST▲2

    Premier solution for exporting Office 365 data to PST

    2024 · its alternatives →

17. 17
    MacSonik Office 365 Backup Tool▲5

    Office 365 Migration to File Formats & Email Clients

    Jul 2026 · macsonik.com · its alternatives →

18. 18
    Mozilla Thunderbird Backup Tool▲66

    Advanced solution to backup and migrate Thunderbird emails

    2022 · its alternatives →

19. 19
    DRS Softech Zoho Email Migration Tool ▲11

    DRS Softech Zoho Migration Secure Easy Email Transfer

    2025 · drssoftech.com · its alternatives →

20. 20
    MacSonik Exchange to O365 Migration Tool▲1

    Exchange to Office 365 Migration with Zero Data Loss

    Jul 2026 · macsonik.com · its alternatives →

21. 21
    Sysinfo Tools▲56

    Best solution to convert Mac OLM files to PST format

    2022 · its alternatives →

22. 22
    OST to PST Converter Tool▲8

    Converter Tools OST to PST Conversion with All Emails

    2025 · convertertools.org · its alternatives →

23. 23
    DRS Softech Zoho Mail to Office 365 ▲6

    Fast & Secure Zoho Mail to Office 365 Migration

    Sep 2025 · drssoftech.com · its alternatives →

24. 24
    CloudXena OLM to Office 365 Tool▲1

    The OLM to Office Tool completes the process quickly.

    May 2026 · cloudxena.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →