Why has nobody entered my automation?

Work through these in order — the first two account for most cases.

1. Is it Active?

A Draft automation enrols nobody. Check the Status column on the Automations page. This is the single most common answer.

2. Has anyone matched the trigger since you activated it?

Activation does not reach backwards. Contacts who matched before you switched it on are not enrolled. A flow triggered by "added to an audience" only sees people added after activation.

To test, cause the trigger yourself now — join the audience, match the segment — and see whether you enter.

3. Is it waiting in a delay?

If the flow opens with a Delay or Smart Wait, contacts can be enrolled and progressing while no email has been sent yet. A two-day first delay means two quiet days. Check whether anyone has reached a Send Email step, not just whether email has arrived.

4. Is the trigger narrower than you think?

A segment trigger only fires when a contact starts matching. Someone already in the segment does not re-enter just because the automation is new.

A custom-event trigger needs the connection that produces that event. An abandoned-checkout flow with no store connected will never fire.

5. Are the contacts sendable?

Entering a flow and receiving mail are different things. Suppressed, unsubscribed, invalid and non-consented contacts enter and progress but are not emailed.

This is the answer when enrolment looks healthy and email volume does not. Lists built from ad leads are the usual case — see Why fewer people received the campaign.

6. Is the automation paused?

Paused stops enrolment and freezes contacts where they are. Reactivating continues them from that point.

Still nothing?

Note which of the six you have ruled out and contact support with that — it turns a vague report into a short investigation.

Next: check the Status column on Automations first, then trigger the flow yourself the way a real contact would.