我如何解析电子邮件以获取电子邮件的原始收件人？

Question

I had email source with me and want parse original recipient of email.

Lets say "user1@test.com" is receiving a email, but in "To" list user1@test.com, user2@test.com & user3@test.com are mentioned. I want to get only user1 from email source.

In initial analysis, email from mdeamon server contains "X-MDaemon-Deliver-To:" tag. Similarly email from Devcot mail server contains "Delivered-To:". But not getting generic parsing logic to get original email recipient.

How I can parse email to get original recipient of an email?

Answer 1

The best way to get this information is probably to parse the Received headers to see who the message was delivered for. In other words, look for a Received header that has a for token followed by x@x.com (where x@x.com will be the recipient).