
GainTools OST Converter Software
The GainTools OST Converter Software Easily Handles Large OST Conversion Efficiently
One time fee873 impressionslaunches Jun 152 comments
Comments
>log in to comment- David Johnson· 2mo ago
I was moving some mailbox data from an older system and needed a way to handle the OST file. I tried this tool for the task and found the process quite manageable. The conversion steps were clear, and I was able to check my emails after the process. It saved me from spending time on complicated methods.
- Sam Wilson· 4mo ago
With GainTools OST Converter, I was able to successfully convert my .ost file with minimal hassle. The conversion process was quick and easy to complete; my emails and their attachments were successfully converted as well. The user-friendly interface allowed me to use the program without any trouble or complications
GainTools OST Converter converts Outlook OST files to PST, EML, MSG, MBOX, VCF and other formats while preserving data.
- for
- IT professionals and non-technical users needing to export Outlook data.
- pricing
- freemium · free trial
Key features
- Batch conversion — Convert multiple OST files to PST, EML, MSG, MBOX, VCF and other formats in one operation.
- Free preview — View folder contents, emails and attachments before exporting to ensure correct selection.
- Supports damaged files — Handles healthy, corrupted, encrypted, password-protected and inaccessible OST files.
- Large file handling — No size limits; can process very large OST files quickly and accurately.
- Windows compatibility — Runs on all Windows versions (XP, Vista, 7, 8, 10, 11) and works with Outlook 2003-2019 and Exchange Server.
- Multi-format export — Exports to PST, EML, EMLX, MSG, MBOX, VCF and retains non-English characters.
Use cases
- Migrate Outlook data to Thunderbird or Apple Mail via MBOX/EML export
- Recover emails, contacts and calendars from a corrupted OST file
- Bulk export of archived OST mailboxes for legal or backup purposes
GainTools OST Converter Software FAQ
What data can be exported from an OST file?+
The tool can export emails, contacts, calendars, notes, journals, tasks, appointments and distribution lists.
Can the converter handle corrupted or password-protected OST files?+
Yes, it supports cached, encrypted, corrupted and password-protected OST files.
Is there a limit on the free trial?+
The free trial allows conversion of around 10 items per OST folder.
Do I need an internet connection to convert files?+
No, the software works offline and does not require an internet connection.
What output formats are available?+
PST, MBOX, EML, EMLX, MSG and VCF (plus optional ICS).
Summarized by DevHunt from gaintools.com · Sep 28, 2026. Details may change; check the official site.












