Extract core message from an email. Remove previous mails

Basic App : User signs up. Adds an email account with their email id and password. (Back you configure SMTP and IMAP). We store all incoming emails. We let user reply to email from an UI. Most important: You need to extract the body of the mail from the entire trail mail. Here is the example of an incoming email and the red part is the one that we need to extract and store it separately in the table. You need to remove previous emails, greetings & signature from the email. [login to view URL]