The subject line of the email will always contain the name of the second one (the one added later).
For example, in this case the text "Faktura" will be inserted into the email subject line (based on the name of the Faktura report).
Two Default Print Reports
How to include the name of my desired report in the subject line when I have two default reports set for printing in the document type?
Written by Lenka Haringerová