WinterCMS plugin for dynamic forms creation. Comes with an API and mailing functionalities out-of-the-box.
The sntoolsMailingList array should be added to the mail config. Each item of the list is an array with the name and address of the receivers.
'sntoolsMailingList' => [
[
'address' => '[email protected]',
'name' => 'Firs Example',
],
[
'address' => '[email protected]',
'name' => 'Second Example',
],
],