Hidden Variables in Documents - CSV-Populated Field Not Visible to Recipients
Users need the ability to include a variable in a document template that can be populated via CSV during Bulk Send but remains invisible to recipients. The primary use case is embedding internal tracking identifiers (e.g., workflow tags, custom IDs) for retrieval via the API — without exposing that data in the recipient-facing document. Current workaround is setting the variable's font color to white, which is fragile and unsupported. A native hidden/metadata field option would eliminate this friction.
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Jennifer Wilson
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