How to attribute Telegram unsubscribes to an ad source

A channel member count is not enough. The system must remember the member, invite, and attribution click used for the join.

When the status changes from member to left or kicked, the exit updates that existing record rather than guessing a new source.

A simple seven-day unsubscribe rate divides exits by confirmed joins in the same cohort. One-, fourteen-, or thirty-day windows may fit other publishing rhythms.

Compare identical observation windows. A three-day-old creative cannot yet have a fair 30-day retention measure.

A high early unsubscribe rate often signals a mismatch between the ad promise and the channel. Check the creative, description, and first posts.

Individual exits also happen for unrelated reasons. Look for a pattern across campaigns instead of judging one subscriber.