VOvocal
Letters

Send a PDF linked to an invoice

Changed on

Uploads the previewed PDF directly to Pingen with automatic sending, color duplex printing, and economical postage. Pingen reads the destination from the PDF. No country restriction, billing, worker, or local PDF storage. Reuse one Idempotency-Key per send action to prevent duplicates. processing means Pingen accepted the PDF and is analysing it; dispatch is confirmed by webhook.

post/invoices/{invoiceId}/send-letter

Request

Path parameters

invoiceIdstring required

Headers

Idempotency-Keystring required

Request body multipart/form-data

documentTypestring

Optional free-form label, e.g. invoice, reminder, contract, or report.

invoiceIdstring

Optional invoice owned by the authenticated account.

invoiceStatusstring

Legacy alias of documentType; values must match if both are provided.

pdfstring binary required

Response

Pingen accepted the PDF, or this action already exists

successboolean

Changes