What is the current best way to check in automation, if a custom-field is empty?
If it is NOT empty, I want to add a tag to this contact
I am asking, because currently (since 2-3 years) there is still no operator available like “is empty” or “is not empty”.
If a visitor fills an form for a service/order request, I use a custom-field (due to gdpr) to click/check, if the visitor wants to get the newsletter besides his service/order request.
I urgently need a workaround.
thanx in advance for your help.