Abhishek,
Good morning. I hope you are well and thank you for the fast response. From the tablet, I open my email (Outlook) typically, in the email I have a PDF attachment (from a desktop using Adobe Acrobat Reader), I open the PDF using the Adobe Acrobat Reader directly from the email. I make all necessary changes once opened with Adobe acrobat reader and I send it directly from there by touch the three connected dots at the bottom right corner. I click Share and it opens an option box where I select my Outlook email. once composing the email, I can see the attachment I input the email where its being sent to and hit send.
again the person at the other end does not receive it.