When you send text messages to your contacts, such as to ask if they can come to work to fill an empty slot, they can reply back, and you can view their responses. You can see your contacts' replies by going to the Summary Report tab within the report for your message, where you can see if anyone has replied. If anyone has replied, you can click on "See all responses" to see specifically which phone numbers the replies came from.
Note that we stop posting replies two hours after the message end time. If you expect contacts will need more time to reply, you can set the message end time further out in the future.