Segment custom headers versus email values

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

The segment-upload validator accepts recognized custom header names, but the segment import persists basic member fields rather than per-email custom token values. For an email-specific amount such as custom_amount_due, upload the CSV directly as Outreach recipients and insert the corresponding custom merge token there. The direct recipient upload stores those values per Outreach/recipient. A valid custom segment header alone does not confirm a populated email merge value.