What happens when I receive a reply?

Replies go straight to your own inbox, just like any other email. Qualifier detects the reply and stops the sequence for that prospect, so no more follow-ups are sent to them.

From there, it's up to you to continue the conversation.

A reply also affects the prospect's colleagues: by default, nobody else at the same company is contacted by your company's campaigns after someone has replied. You can change this under Settings, Company tab, Nurturing. See I see several people from the same company. Why is that?