Forms 

With this extension the powermail Forms get 3 extra fields at the bottom.

Use Salesforce Finisher 

If enabled, the submitted data for this form is transmitted to Salesforce after submit.

Salesforce Organization ID (OID) 

Enter your Salesforce Organization ID / orgId / OID. This is required if you enable the Salesforce Finisher for this form.

Configuration in a Form when Salesforce Finisher is disabled

Configuration in a Form when Salesforce Finisher is disabled

Configuration in a Form

Configuration in a Form when Salesforce Finisher is enabled