This idea has been merged into another idea. To comment or vote on this idea, please visit LD-I-134 Add a way to see Text notification easily like i V1.
In version 1 when someone replied to a text or email there was a notification under the little bell in the tp right hand corner. In V2 this feature doesn't exist. So unless you have the mobile app there isn't a way to find out unless you click the communications tab. Feature request add back the same feature that was in V1.