How to setup a "thank you" page for your opt-in form?

To setup a "thank you" page for your opt-in form, from the editor go to the settings of the opt-in form then:

• If you use "External Service" with the "HTML Form Code" option, then you need to specify the "Thank You" URL from your autoresponder side.
  
  
• If you use "External Service" with the "API" option, then you will be able to specify your thank you page URL in the "THANK YOU PAGE URL" field, once your visitor submits the form, he'll be redirected there.
  
  
• If you use "Internal Database" then you will be able to specify your thank you page URL in the "THANK YOU PAGE URL" field.