If your replies are not tracking the first thing you may have a broken Gmail or Microsoft Exchange integration, depending on what Email client you use.
If you are using a custom SMTP to send your emails then you might be using an older form of reply tracking that relies on several factors.
In order for ToutApp to track a reply accurately when using a custom SMTP server, two things must match up:
Additionally, tracking will only be applied to the first person in the 'To' field of an email. Instead of sending an email with multiple people in this 'To' field, to get the most accurate tracking on an email, use our Group Email functionality!
Reply tracking is currently only available for Gmail and Exchange users!