Send & Track links follow the same validity rules as regular shared links in Drime.
Notes
By default, a shared link has no expiration date unless you set one.
If you add an expiration date in the link settings, the Send & Track link will expire on that date.
Once expired, recipients will no longer be able to access the file, and tracking will stop.
This means your Send & Track link remains active as long as the underlying shared link is valid.