Why are multiple email addresses included for one person in an audience export?
Audience exports include several known email addresses for one person to improve matching across advertising platforms.
Why multiple emails help
People often use different email addresses on different platforms. A candidate might sign in to Facebook with a personal address and use a different address for Google. If we sent only one address, the platform might not recognize the person.
How it works
We include each known email address for the person in the advertising feed.
Every address is hashed before it is sent, so the platforms never receive readable emails.
Each platform checks the hashes against its users and matches the ones it recognizes.
What it means for you
More people in your audience can be matched and reached.
You are charged per person, not per email. Extra email records do not use extra credits.
Match rates still vary by platform. Sending more emails improves the odds but does not guarantee a match on every channel.
The same idea applies to Lead Reactivation uploads. If a lead has more than one email address, add a separate line for each email with the same first and last name.
