Working Instructions of MailsDaddy OST to PST Converter tool

How to Convert OST to PST ? Migrate OST to Office 365 Export OST to Exchange Server

Step 1: Download and install (Installation Guide) the MailsDaddy OST to PST Converter tool in the local machine. After that launch the OST converter tool and click on the Get Demo button if you don't have a valid license key.

get demo

Step 2: From the first appeared screen in your Window, click on Add file button to add OST files.

click on add file button

Step 3: Here you get three options to add an OST file.

  1. Add File(s): This option is used to add an OST file if you know the exact location of Microsoft OST file.
  2. Add Folder: Select this option if you want a folder having multiple OST files saved in it.
  3. Search Folder: If you don't know the exact location of the OST files select the Search folder option. It will help the user to find multiple OST files saved in a drive.

After getting the OST files, check the checkboxes corresponding to the Outlook data files and click on the Ok button.


Note: From here, you can add multiple OST files for Bulk Migration


add ost data file

Step 4: From the next appeared Window, you can see the folder structure ( optional) and preview of Emails (optional). Now click on the Export button.


ost preview

Step 5: From the Export Window, click on the PST (Outlook data file .pst) option >> apply Date filter (Optional) >> suggest a Log file saving destination. In the last provide a file saving destination path to store the PST file in the local machine and click on the Next button


select destination

Step 6: From the Export to PST Window, select the Single PST or Separate PST option as per requirements. Split the PST files if you have large OST mailbox file and click on Export button.


split pst file

Step 7: Click on the Export button and wait until the process complete. After completing the process, click on the OK button.


process start

Read our blog to make sure how to open or import PST file in MS Outlook.

As we all know Office 365 provides a number of features and benefits to the users. So here we are also helping the user to migrate their Outlook OST data in Office 365 account by following some steps-

NOTE: The OST to Office 365 Migration is available only for Business License and Enterprise License users. For Personal License, it will be disabled.


Step 1: Download and launch the MailsDaddy OST Converter tool and run the software. From the Get License Window click on Get Demo option if you don't have a license key.


Step 2: From the first appeared Window, hit on the Add file button


click on add button

Step 3: After clicking, you will get three option to load the OST file.

  1. Add File(s): If you know your OST file location then choose this option. From here you need to surf your local storage to fetch the file.
  2. Add Folder: Click on Add folder option to load multiple files at once stored in a particular folder.
  3. Search Folder: Search the OST files from the machine storage drive.

add OST

Step 4: After loading the files, you will able to see the preview of the email and folder structure in the software. Hit the Export button to start the OST to Office 365 Migration.


load bulk ost file

Step 5: From the Export Window select the Office 365 option >> Provide Naming Convention (Optional) >> Apply Date filter (Optional). Provide a log file saving location and click on the Next button.


select office 365

Step 6: In Office 365 Export Window select any export option and if you want to convert your OST calendar and contacts (Optional) then choose advanced options.


ost to office 365 conversion

Step 7: Provide Office 365 login credentials to sign-in in O365 account. Wait until the process completes and after completing the process click on the Ok button.


get demo

Read our blog to make sure how to open or import PST file in MS Outlook.

This is the new addition in the tool, which will help the Outlook users to export their OST data in Exchange Server. To do so you need to follow some instruction pointed below-

NOTE: The OST to Exchange Server Onversion option is available only for Business License and Enterprise License users. For Personal License users, this option is disabled.


Step 1: Get the tool form its official website and install it in Windows supported machine.. From the Get License Window click on Get Demo option if you don't have a license key.


get demo

Step 2: After launching the OST to Exchange Server converter tool, from the first appeared screen click on the Add file button.


click add button

Step 3: Choose an option to load the OST file in software from Browse Window.

  1. Add File(s): If you know your OST file location then choose this option. From here, you need to surf your local storage to fetch the file.
  2. Add Folder: Click on Add folder option to load multiple files at once stored in a particular folder.
  3. Search Folder: It will help you to search the OST files from the machine storage drives.

add ost

Step 4: Now you can see the preview of the individual selected email and examine the complete folder hierarchy. After examining the emails, click on the Export button.


export bulk ost to exchange server

Step 5: From the Export Window select Live Exchange Server option to export the OST data. Fill the details of Naming convention (optional) and insert the Date filter range (optional). Suggest the log file saving location (if required) and click on the Next button.


ost to exchange server

Step 6: In Export to Exchange Server Window, select the required option from the export option section >> choose an option from the advanced option (if required) >> click on the Next button


click on next

Step 7: Provide Server Name and user login credentials to sign-in in the Exchange Server account and wait until the conversion process finishes and then click on the Ok button.


fill login detail