Guest email and invitee email are separate for follow-ups

For school administrators using GiveCampus Outreach. Controls can differ between the classic email editor and the newer Composer editor.

An attendee source uses the email saved on that attendee, not an invitation CSV lookup by guest name. A missing guest email is not automatically recovered from the original invitee list. Ordinary email event exclusion matches attendee email to recipient email, so another address used at registration can leave the original invited address included. Preserve the invitation audience for invitee-based follow-up, review identity discrepancies and inspect final inclusion/exclusion before sending. Do not assume an automatic mismatch alert or future feature date.