Reply Tracking is done by looking at a message ID that’s in every email you send. Every email contains a unique message ID that allows us to have some of the best reply tracking around.
If Sales Connect can’t track your prospect’s reply to your email, it won’t be able to stop a campaign based on reply detection or log that reply to Salesforce. What do we mean any email address can reply?
This means that if you email email@example.com and he responds with firstname.lastname@example.org, we’re able to track the reply. Additionally, if you email email@example.com and CC firstname.lastname@example.org, and Alan writes you back, it will also detect the reply and end the campaign.