CoSign is the only digital signature solution that is seamlessly integrated with both SharePoint on-premises and Office 365 / SharePoint Online. Adding digital signatures to SharePoint keeps approval-based workflows electronic from start to finish, streamlining processes while saving time and money. The CoSign Connectors for SharePoint Server and Office 365 are add-on products purchased in addition to CoSign Central. They’re included in the CoSign Cloud Premium Package.
More information is available for the CoSign Connector for Office 365.
The CoSign SharePoint on-premises integration features include:
Even without a connector, CoSign provides users with a rich set of digital signature features for Word, Excel and PDF documents managed by SharePoint on-premises or online. Users can sign any document type with CoSign prior to checking it into SharePoint, and can also sign PDF documents and save them back to SharePoint servers in one step. See the configurations page for more information.