Dynamic subject for form notification email Is there a way to have a dynamic notification subject in Sprout Forms via custom fields, eg if I have a field called subject can I use this in the Subject option under Notifications as {{ subject }}?
Yes.  You can use the value of your custom field subject in two ways:

Shorthand Syntax:

{subject}


Object Syntax

{{ object.subject }}


If you want to perform any conditional logic, you will need to use object syntax for the conditional logic:

{% if object.subject != '' %}{{ object.subject }}{% else %}Fallback{% endif %}