I don’t code! If you want use programming libraries - then this task is not for you! I need someone who is proficient with pure REGEX syntax.
Explanation
Regex requirements
Note: Requirements are not final, task is complex, I don’t know yet all use cases.
Retrieve email subject as separate group “Subject”.
Retrieve “From” email as a separate group “From”
Retrieve “To” email as a separate group “To”
“Content” group should contain only the lastest message(message can be inside email thread or be the 1st in the email thread) without “Forwared message” header(first 5 rows with info about forwarded message).