From what I understood, you have a column(Email Proof) which holds the value of Email and Subject separated by comma, you can use split to get the email out of it by using below expression:
This will get the email id from the column value. Please reply back if this differs from what you are expecting.
Hope this Helps!
If this reply has answered your question or solved your issue, please mark this question as answered. Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up. THANKS!
Email Proof contains the subject of the email (He would cc me) the app user has sent, showing that he has submitted the report. On the admin end i wish to see whether i have received the email with the same subject line or not. If yes, then the report was actually submitted