ConvertKit
ConvertKit is an email marketing platform that helps you send customized emails to your customers. It helps you send well-timed and accurately targeted email content to your subscribers.
By integrating your forms.app and ConvertKit accounts, you can create a subscriber record and segment your customers by adding tags to your subscribers. You can also add a purchase record to your subscriber profiles.
You might also like

Discord
Share your form responses with your colleagues on Discord.NativeZapier

Helpspot
Create tickets, users, and have a much more automated customer support process with these Helpspot integrations.Zapier

GatherContent
Create advanced automations with the GatherContent integration.Zapier

Clientify
Create customer profile and order with your form data.Zapier