The Link Output Channel is a special Interactive Output Channel, where the result is a sealed PDF that includes information received from the recipient as well as optionally a signature or uploaded files.
For more information on creating and using the LInk Output Channel see Link Output Channel.
The link has a configurable expiration period. After this period users trying to open the link will receive an error message, as well as a “document expired” email (see Using Email Templates).
You can configure a link expiration period for a specific Form (see Defining the Default Form Generation Settings). The expiration period of the Form overrides the system setting.