The following article covers the possible email enrichment scenarios when a leads converts in the metadata platform.
Person has a business email and no personal email
We use the business email for the email and business email fields.
Person has a business email and a personal email
We use the personal email for the email field and business email for the business email field.
Person has only personal email
We use the personal email address for the email and business email fields.
Other notes
About 90% of leads enter their personal email address as their opt-in email.
About 70-85% of leads have business email fields that can be enriched.