Webform, let data expire after a period of time How might I expire data collected in Webform? That is, I'd like to purge data after a period of 6 to 18 months. 

Alternatively, I'd be happy to find a module that cleans up old data in a Drupal 7 database.
Try the Webform auto-delete  sandbox project.


  Automatically delete webform submissions after a set period of time.