Error using replace regular expression

Help
21

Message ID is returning a blank, though I can see one exists in the mail properties screen on outlook.

22

Hi @SoqedHozi,

If you have checked “Only Unread Messages” option in the property panel of outlook mail activity,
please make sure your inbox have some unread mails.

Warm regards,
Nimin

23

I seem to be receiving null for all headers

24

I have and I have. Indeed, it only tries to assign is the get returns at least one email.

25

A value is returned for mail.subject but not mail.headers(“subject”)

Very confused