Setting Mail Subject parameters

With Duplicati when when setting the --send-mail-subject can I use parameters like %DATE% to have it print a date in the Subject Header when mail is being sent? I couldn’t see anything from the Advanced Options - Duplicati 2 User's Manual with setting such string value.

Output result should end up with something like this;

Input:
Duplicati %OPERATIONNAME% report for %backup-name% [%date%]

Output:
Duplicati USER-Backup report for USER-PC-Backup [2021-02-19]

I don’t think this is possible with the current version, but it should be a pretty simple feature to add!

seems to have somebody working on adding something similar. Presumably *Time includes the Date?

%BeginTime%
%EndTime%
%Duration%

Nice! I was thinking of tackling this one but will hold off since someone else has already made progress.