Stop-on-reply
The moment a contact replies, their sequence stops — no more follow-up steps are sent to them, even if later steps are still scheduled.
How it works
SubsiMail periodically checks each active contact's inbox activity since their first send in the sequence. If a reply is found, that contact's status flips to replied and no further steps are queued for them. Every other contact in the same campaign keeps going — stop-on-reply is per-contact, not per-campaign.
How detection works per provider
| Gmail | Checks the connected inbox for new messages from the contact's address since the sequence started |
| Outlook | Same idea, scoped specifically to the Inbox folder (not Sent Items) |
| SMTP/IMAP | Polls the connected IMAP inbox for a new message from that address |
Why a self-test doesn't trigger it
If you test a campaign by enrolling yourself and your sending account happens to share an inbox with the contact address, reply detection won't misfire on your own outgoing message. Outlook's check is deliberately scoped to the Inbox folder specifically (excluding Sent Items) for exactly this reason, and a short buffer after send time is applied across providers before a "reply" is trusted — both guard against a real self-send test being mistaken for an actual reply.