I am facing a quite bang-against-the-wall, but common (I believe), scenario:
- I have records in my NL Data Extension to which I send monthly newsletters.
- My All Subscribers List is therefore updated as new records are added or updated as I send newsletters and as subscribers unsubscribe.
- Aside from this, I have a Smart Capture form in a CloudPage, filling a Template-based Data Extension ("SmartCapture - Contacts Template Extension"). This Data Extension is Sendable and the Send Relationship is the following "Source relates to Subscribers on Subscriber Key".
How do you manage the fact that there are records with an email address that already exist in All Subscribers List with a specific Subscriber Key, that could fill the form and get a different Subscriber Key (for the same email address)?
Thank you in advance for your advice!