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You can send the signing email again to anyone who has not signed yet, or turn on automatic reminders when you create the request.

Manual resend

Use the resend a Box Sign request endpoint to email remaining signers. You cannot resend a request when the status is signed, cancelled, declined, expired, error_sending, or error_converting. Wait 10 minutes after the last send before you resend. A resend inside that window returns a 400 Bad Request error. You can resend a request when the status is created, sent, viewed, or error.

Automatic reminders

When you create a request, set are_reminders_enabled to true. Box Sign emails signers who have not signed yet after 3, 8, 13, and 18 days.
Last modified on September 18, 2026