How do I add a callback URL?

From the Navigation toolbar, choose Settings.
Select APIs under Developer Space.
Scroll down to the Callback URL section.
You can use Merge tags to find out which contact performed an unsubscribe action. The type of merge tags that can be used are shown in the screenshot below.
Click Configure now to configure an Unsubscribe callback URL.
Enter a callback URL, (ex: "http://example.zylker.com/") where you can view information about your contacts' actions in lists.
Choose a Request Type.
Click Save.

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Quick Links	Workflow Automation	Data Collection
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Contact Forms	E-commerce	Forms for any business
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Free Forms	Travel
Prefill Forms	Non-Profit
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Form Designer	HR	Mobile Forms
Card Forms	Food	Offline Forms
Assign Forms	Photography	Mobile Forms Features
Translate Forms	Real Estate	Kiosk in Mobile Forms
Electronic Forms
Notification Emails for Forms	Alternatives	Security & Compliance
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