Update A Return Envelope
Renames or re-describes one of your return envelopes. Template PDFs, PNG proofs, and billing attributes are staff-managed: uploading a file is refused with 403, and fields such as envelope_type, postage_applied, cost_per_unit, or active are not accepted on this endpoint.
Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| name | String | Sometimes | N/A | New display name (max 255 characters). Required only when provided. |
| description | String | No | N/A | New description. |