Hi SivaMani-0897,
First of all, there is no built-in function in Outlook to change emails to pdf format. You need to use some related add-ins or VBA code to convert emails to pdf files.
And VBA macros use the functions of Word to save documents in pdf format.
One benefit of this macro is that any hyperlinks in the message will continue to work, and any Internet images will also be automatically downloaded.
So I suggest you try to use VBA macros.
I also found some related links you can refer to.
Saving Outlook email as PDF + Attachments
VBA Macro in Outlook
Convert MSG email to PDF file in C#
Best Regards,
Daniel Zhang
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.