As a core component, Join It helps you manage your members -- which includes the status of their memberships. Commonly, statuses will change (usually due to an expiration date or admin's manual update) and the member needs to be notified of this change.
Join It helps keep your members up-to-date with triggered Membership Cancellation emails.
Description of Membership Cancellation Emails
Membership Cancellation emails are delivered to members when their membership is cancelled.
Typically, a cancelling a membership only applies to memberships that are set to automatically re-bill.