You're not allowed to break my facetious example by adding your own facetious information! :)
This is true in some cases, false in others. If you have 8 years worth of emails, that's what you have. If you want to segment your data based on info in your DB (people with & without a mortgage), you will probably need to use emails.
In any case, you are still leaking data. FB now know that your customer is John Lennon.
The email in this case is somewhat trivial. It serves as a userID. If you are super concerned with giving away an email, there are services like LiveRamp that can translate that into an anonymous audience ID for use with your DMP and/or DSP so you target the ID without handing over the email.
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You're not allowed to break my facetious example by adding your own facetious information! :)
This is true in some cases, false in others. If you have 8 years worth of emails, that's what you have. If you want to segment your data based on info in your DB (people with & without a mortgage), you will probably need to use emails.
In any case, you are still leaking data. FB now know that your customer is John Lennon.
The email in this case is somewhat trivial. It serves as a userID. If you are super concerned with giving away an email, there are services like LiveRamp that can translate that into an anonymous audience ID for use with your DMP and/or DSP so you target the ID without handing over the email.