reminder

Hi, Does anyone know if it's possible, given a PackageID, to trigger a reminder email so that all the signers are reminded to sign ? I know its possible to set up a reminder before the creation of the package but what I am trying to do is to send a reminder at any given time after the creation of the package. The UI offers this possibility (see attached screenshot), I was hoping it is possible to do so via the API C# SDK Thanks Frederic