STEP 1: install SysInspire for ost to pst Software and click Browse to select ost file for extracting the required emails.
STEP 2: You can select a single as well as multiple ost files from your local drive for email extraction.
STEP 3: A complete get a sneak peek of ost file articles is displayed by the ost recovery software.
STEP 4: Save individual email items by right-clicking on the specific email as shown below in the desired format.
STEP 5: Select the pst file as Output to save the complete recovered data.
You can also choose any desired output type as per your requirement from the saving options.
STEP 6: Finally, select the desired area to save the ost mailbox data to the pst file.
By this all your emails as well it'll it's components can be easily extracted.
More info:- Extract email from the ost file