I'm trying to trigger a confirmation email to a user that follows a custom object. Is this possible?I found this, which says that triggering on EntitySubscription is not possible: https://salesforce.stackexchange.com/questions/184684/how-to-write-a-trigger-for-entitysubscription-objectI'm trying to mirror the functionality that SFDC provides for their known issues: https://success.salesforce.com/issues. They have a "This issue affects me" checkbox, which will send you a confirmation email of your subscription to the known issue. In my case, we have a "known issue" custom object, and users are able to "follow" them, but I can't figure out how to trigger the confirmation email to them.