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Documentation Index

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Changelog
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6th February 2026
v2.8.0
New envelope creation options and improved searchTwo new optional fields are now available when creating an envelope:
  • access_link_expiration_days — Control how long each recipient’s signing link stays valid.
  • signing_steps_expire_days — Allows the envelope’s expiration to refresh after each signing step, rather than relying on a fixed expiration date.
The envelope listing endpoint now supports a search field that matches across envelope name, recipient name, and recipient email in a single query. The previous name filter is now deprecated in favor of search.
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10th December 2025
v2.5.x
New endpoint: download a single signed document
  • Download a specific signed document PDF from an envelope
    GET /v2/envelope/{envelope_id}/signed_documents/{document_id}
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16th September 2025
v2.5.0
Introducing Attachment RequestsWe have launched a new feature that allows you to request your recipients to upload files while signing their documents.Added 5 new endpoints
  • Set Envelope Attachments Placeholders
    PUT /v2/envelope/{envelope_id}/attachments/placeholders
  • Set Template Attachments Placeholders
    PUT /v2/template/{template_id}/attachments/placeholders
  • Set Envelope Attachments Settings
    PUT /v2/envelope/{envelope_id}/attachments/settings
  • Set Template Attachments Settings
    PUT /v2/template/{template_id}/attachments/settings
  • Download Envelope attachment files
    GET /v2/envelope/{envelope_id}/attachments/{file_id}
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2nd July 2025
v2.3.0
Introducing ID verificationAdded a new recipient verification method, ID_VERIFICATION, allowing for an automated ID and selfie check before the recipient can access the envelope. The value parameter must be left empty when using ID_VERIFICATION; existing rules for PASSCODE and SMS remain unchanged.
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29th January 2025
v2.2.0
Introducing real-time audit trails using webhooksWe’ve released a new webhook event called “ENVELOPE_AUDIT_TRAIL” that lets you track recipient actions in real-time, such as when an envelope is signed, viewed, or declined by a specific recipient
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15th January 2025
v2.1.0
Added 2 new endpoints
  • Download certificate of completion
    GET /v2/envelope/{envelope_id}/certificate
  • Download envelope content
    GET /v2/envelope/{envelope_id}/signed_documents
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21st August 2024
v2.0.0
Introducing Sign.Plus version 2.0Enabling developers to integrate eSignature functionalities to their own workflow.