Using the Send Email action, you can select an Account and enter SMTP details, but there is no way to dynamically control which account you use, or in the case of multiple email addresses being capable of being used against one account, dynamically control the “From Address”.
For our purposes, we use Mandrill, which has one set of SMTP credentials (you can use multiple but you can also just use one) and by feeding that single set of credentials into PWA (for example), we can use any from address we want and use tokens to indicate what it should be, making senders fully dynamic.
Is there any way to either dynamically control the Sender, or barring that, get a field to enter the from address along with from name?