Add log information to E-mail Templates in the Scheduler

I'd like to see some log information in my E-mail from Scheduler, i.e. i'd like to see any warnings executing my job. I can not find a template/variable for that in https://knowledgebase.jedox.com/jedox/maintenance/scheduler-email-templates.htm

I can get the desired result with a groovy job, but it would be very helpful to have this build in. Attached you find an example mail shot from a groovy job including my warnings.

Groovy:

state = API.executeJob('<<YourJob>>');

//retrieve execution info

id = state.getExecutionId();

warnings = state.getWarnings();

errors = state.getErrors();

status = state.getStatus();

log = state.getLog('WARN');