Tested with powermail 13.1.0 in TYPO3 13.4.28:
Since powermail 13.1.0, the Form Overview in the backend module also shows disabled forms.
In previous versions the list didn't contain these forms.
Maybe it's not bad if these forms are showing up, but in that case they should be marked as disabled.
Currently it is not possible to tell from the list whether a form is disabled or not.
Tested with powermail 13.1.0 in TYPO3 13.4.28:
Since powermail 13.1.0, the Form Overview in the backend module also shows disabled forms.
In previous versions the list didn't contain these forms.
Maybe it's not bad if these forms are showing up, but in that case they should be marked as disabled.
Currently it is not possible to tell from the list whether a form is disabled or not.