iContact
iContact is an e-mail marketing platform where you can communicate with your customers via phone and e-mail. Regardless of the size of your business, you can provide unlimited technical support to your customers with iContact.
When you set up the forms.app and iContact integration, you can create a new contact profile in your account, add subscribers to lists and send messages to your subscribers.
You might also like

Tallyfy
The best way to automate your workflow.Zapier

Campaign Monitor
Streamline new contacts to your emailing list from your form responses and automate your work.Zapier

Snappy
The easiest way to simplify customer support.Zapier

Loomly
Create a social media post and start digital marketing automation.Zapier