Some of the Live Campaign advanced features include ability to auto delete the sent emails and its statistics and much more.
Navigate to Live Campaign module > Administration > Preferences
Auto Delete Sent Campaigns After X Days
Set the value greater than 0 and Live Campaign will automatically delete the sent emails and its statistics. Overtime, the sent campaigns can accumulate and require a large amount of database space. This feature saves you from periodically deleting campaigns manually.
Secret Key
This key is required when you’re using the Integration URL (LINK) feature. Be sure to provide a strong key with no spaces.