Help on Code logic to remove duplicate mails from webapp mail box

[emanbanerjee at gmail.com]

Hi

I am working on a project where we make connections to webapp mail and extract subject, sender,body etc from mails and save it in dataframe and insert it n SQL DB.

My next challenge is to remove any duplicate mails from mailbox.
Could you kindly help me.
It can be a new mail which is entering the mailbox is first checked , if its a duplicate email,it will not be inserted to mail box


Thanks