How to get information of sender whose email was forwarded?

[ArunaAcharya]

I love using Imap library and it is very helpful thank you so much for that, but I just came across one problem and I wanted to know if there is any solution for that. Here is the problem:
let's say I have an email id A, B and n number of C. I am using Imap in email A to extract data. n number of C sends an email to B and B forwards all of that email to A. Is it possible to extract details of C when processing A emails?

[mjs]

This isn't really an IMAP question and it depends somewhat on how the forwarding is done, as there are different forwarding strategies.

If the emails are forwarded in a standard email client there will be headers and other changes to the email which might reveal with original sender. I advise you learn a little about the structure of emails and then take a look at some of the raw content of emails that have been forwarded.

The spec with details of how emails are structured is here: https://www.rfc-editor.org/rfc/rfc2822.html

The email package in the standard library can be used to parse and inspect emails. You can get the raw email content with IMAPClient by calling fetch with RFC822 and then parse it with the functionality in the email.parser package.