Working Instructions of MailsDaddy OST to PST Converter tool

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 or Open file button to add OST files.

Browse OST file location to load into the software.

Note: You can also add multiple OST files for Bulk Migration


click on add file button

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


ost preview

Click on the Export button to initiate batch migration


ost preview

Step 5: Now choose export option: PST for MS Outlook, >> Applying Date filter. is optional. Browse the destination to save converted PST file in local system.

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.

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 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 migration tool, from the first appeared screen click on the Add file button.


click add button

Step 4: Now you can see the preview of the individual selected email and examine the complete folder hierarchy.

export bulk ost to exchange server

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. Date filter is optional.

click on Next button. ost to exchange server

Step 6: In Export to Exchange Server Window, select the required option: Primary folder or Secondry folder (Naming the folder is optional) >> 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