Do you use Sendfox? You can integrate your account with Studiocart by adding your Sendfox Personal Access Token in the Integrations settings tab.

How To Integrate Sendfox With Studiocart

Log in to your Sendfox account and navigate to this page https://sendfox.com/account/oauth and click Create New Token.

Enter a name for your token that describes what it will be used for and click Create.

Note: The token will only be shown once, so be sure to copy and save it before closing the window. 

Copy the Personal Access Token and head over to your WordPress Dashboard, select Studiocart > Settings. 
Select the Integrations tab and paste the Personal Access Token into the Sendfox API Key field box. 

Scroll to the bottom of the Integrations window and select Save Settings. Your Sendfox account is now linked to Studiocart. 

From here you can set up a SendFox integration by going to a Studiocart product and selecting “SendFox” from the services menu in the Integrations tab. You’ll see a Sendfox List dropdown with a list of all the email lists you previously created in Sendfox. Choose the list you would like to link to this product.

Note: If your Sendfox Lists are not showing up in the dropdown, click the Renew Mailing Lists button to fetch your latest mailing list info.

In the example below the following will occur from the settings chosen. When a product is purchased with any payment plan a contact is added to the My First Subscribers list in Sendfox.

You have the option to enable Required Consent. If turned on, only customers who have given consent will be added to the list. Note, you will also need to turn on the Opt-in Checkbox in the Form Fields tab for this feature to work.

Once you have finished filling out all the settings needed for your product, complete the order form by selecting Publish or Update.