MacMister OST Converter

OST Converter for Mac to batch export OST mails, attached files, contacts and calendar to 15+ popular saving options. Export OST to PST, EML, EMLx, PDF, MSG, MBOX, Thunderbird, IMAP Server, G Suite, Gmail and more.




  • Export OST Folders in batch in a single time without data loss.
  • The GUI offered by the tool is adaptable and user-friendly.
  • Able to import OST to MBOX, PDF, PST, EML, MHT, CSV, HTML etc.
  • Upload OST mailbox to Thunderbird, Gmail, IMAP Server, O365 and more.
  • Allows to transfer OST mails with attachments, contacts and calendar.
  • Keeps Data Integrity of OST files precise during the process.
  • Get the benefit of multiple naming options to manage resultant file.
  • Operate three easy steps and save crucial time and energy.
  • Freedom to save the output at desired location on Mac.
  • Apply powerful sub-options, available with each saving option.
  • Run OLM Converter for Mac on Mac Monterey and other macOS versions.

  • Compatible with Mac OS Monterey and all previous versions.
  • 100% Safe & Secure virus free Tool

Three Easy Step Procedure - Mac OST Converter

Instantly and Accurately Convert OST Emails, Contacts and Calendar in Three Easy Steps :

Install MacMister OST Converter for Mac

Download and run OST Converter for Mac on macOS. Go to Add Files/Add Folder button and add OST data according to requirement on the software.

Choose Option to Save OST File

The app comes with several file saving options. From the list, users can choose desired file type or email server in which one wants to export OST file.

Receive Precise Output

Set options as per need and click on Export. Procedure will start instantly and completes the whole conversion process in seconds without trouble.

Magnificent Features of OST Converter for Mac

Know about powerful features added in MacMister OST Converter for desired conversion

OST Conversion in Multiple Formats

The Mac OST Converter has numerous saving options that users can use to convert OST database. Users can freely perform the conversion of OST files in PST, MBOX, PDF, MSG, EML, EMLx, CSV, HTML and MHT.

Export OST in Several Email Servers

By utilizing OST Converter for Mac, users can export OST mailbox into commonly used email servers. The solution allow users to transfer OST database in Thunderbird, IMAP Server, Gmail, G Suite, Exchange Server,, Office 365 etc.

Supports all OST Folders Conversion

The Mac OST Converter equipped with a facility of the conversion of entire OST mailbox. The tool help users to convert OST mails with attachments including contacts, calendar and other user items into desired saving option.

Batch Import OST Files on Mac OS

The OST Converter for Mac offers the technique that help users in implementing the batch conversion. The task can be achieved using the Add Folder button present in the tool. Users can load entire folder of multiple OST files and convert the same at once.

Advance Sub-Options in PST and PDF

The Mac OST Converter provides different sub-options in PST and PDF saving option. The PST option allows to create separate PST file for each OST file. And, in PDF option, users have a choice to embed attachments into PDF or extract attachments in separate folder.

Naming Options for File Management

The Mac OST Converter is designed with multiple naming options that help users in managing the resultant file easily. The naming options are present in the combination of from, subject and date such as subject + date (dd-mm-yyyy), from + subject + date (yyyy-mm-dd) etc.

Selective OST Files Conversion

The OST Converter for Mac has the in-built option of carrying out selective OST file conversion appropriately. After files are loaded on the software, they will be shown with checkboxes. Users can utilize the same to transfer selective OST files into desired platform.

Preserves OST File Data Integrity

The Mac OST Converter has the ability to preserve the originality of OST data during the conversion. The application takes care of data integrity of original files such as header, hyperlinks, images, cc, bcc, subject, formatting etc.

Use Dual Options to Load OST Files

The OST Converter for Mac has dual options which will help users in loading OST files on the software screen. The Add Files and Add Folder buttons will prove beneficial for implementing the same. Users can easily use them and add OST files/folder for conversion.

Operable on Entire Mac OS Versions

The Mac OST Converter is totally macOS supported email conversion application. Users can download and operate the tool on Mac Monterey, Big Sur, Catalina and all previous versions provided by Mac OS.

Screenshots of Mac OST Converter

Steps to Convert OST Mails, Contacts and Calendar in Desired Saving Option:

System Requirement of OST Converter for Mac

Get preview of System Requirements to install Mac OST Converter

Software Name: OST Converter
Processor: Minimum 2.4 GHz Processor
RAM: Minimum 1 GB
Minimum Hard Drive Space: 100 MB
Operating System: X OS 10.8 Mountain Lion and all the latest Editions.

Software Specifications

  • Support: 12 Monterey, 11 Big Sur, 10.15 Catalina, 10.14 Mojave, 10.13 High Sierra, 10.12 Sierra, OS X 10.11 El Capitan, 10.10 Yosemite, 10.9 Mavericks, and 10.8 Mountain Lion
  • Processor: 1 GHz Processor (2.4 GHz is recommended).
  • RAM: 512 MB of RAM (1 GB is Recommended).
  • Hard Disk Space: 10 MB of Free Hard Disk Space Required.

Download for Mac Download for Win

Size: 45.4 MB, Version: 1.0

Product Guides

Software Guide Installation Uninstallation EULA

Trial Limitations

OST Converter for Mac free trial edition is available to analyse and explore the whole software working steps and associated options. The free Mac OST Converter version allows to convert first 25 OST mails, contacts and calendar in a required saving option.

Electronic Delivery

The delivery of the product is automated. Once we received the payment confirmation, you will receive an email with a download link and the activation key of respective product.

Request For Software Customization

Drop a request to suggest or advise some more options in OST Converter software.

Frequently Asked Questions of Mac OST Converter

Yes, the software works on all Mac OS versions. You can download and use the tool on Mac Mountain Lion without having a second thought.

Yes, you can transfer all your OST files in Apple Mail in seconds. You can either choose MBOX format or make use of IMAP Server for the same.

No, do not worry about it. No matter how many files you have for conversion, you can do it without facing any data loss. The formatting of original content will also be accurate and precise.

The freeware version of OST Converter will allow you to convert first 25 OST mails, contacts and calendar.

What Customers Thinks!

Verified Software Reviews - OST Converter for Mac