Why transitions beat states
A state is true for a while. A transition happens once. If you build a rule on 'status is sold', you have to answer 'sold since when?' every time it evaluates. Build it on 'status changed to sold' and the question disappears — there is one event, one timestamp, one actor.
The practical form is a rule that knows both sides of the move. 'Changed to sold' is useful. 'Changed from estimate-sent to sold' is precise, and it will not fire when an administrator corrects a mis-keyed record from one closed state to another.
The lifecycle events worth automating
- Created: intake acknowledgement, assignment, first-touch timer.
- Assigned or reassigned: notify the new owner, restart the response clock.
- Status advanced: move the work, notify the next role, start the next timer.
- Status regressed: cancel scheduled follow-ups that no longer make sense.
- Stalled: no transition within the expected window, so escalate.
- Converted: lead becomes customer, estimate becomes job, job becomes invoice.
Backwards and sideways moves
Records do not march forward politely. A sold job goes back to pending when financing falls through. A scheduled appointment is unscheduled. A closed lead is reopened three months later. Any automation that assumes forward-only motion will eventually send a thank-you for a job that was cancelled.
Handle it explicitly: decide, for each rule, what should happen if the record moves back out of the state that triggered it. Usually the answer is cancel pending follow-ups and leave the completed ones alone, because you cannot unsend.
Conversions are the dangerous ones
When a lead becomes a customer or an estimate becomes a job, a new record often appears. If the identity thread is not carried across, every automation downstream loses the history: the source, the original owner, the conversation, the timers.
The rule is that conversion preserves identity. The same continuous reference should follow the work from first contact to final invoice, so that a rule firing at the invoice stage can still see where the lead came from.