When a new/recur donation received from a third-party provider (Apple, Google, Amazon, Venmo, or PayPal) and is mapped to the same CID, do not replace the existing primary email.
Instead, if the email is not already the primary one, add it as a secondary email and record the source type (Apple, Google, Amazon, Venmo, PayPal), following the same approach used for phone source tracking.
The current behavior uses the most recent donation email as the primary email; this update ensures primary emails are preserved while still capturing third-party emails.
https://wikimedia.slack.com/archives/C045WH0QYS2/p1768811632283859 here Kristie for a similar concern.