The question here is — what counts as “unread”. We’re storing a copy of texts from your phone, which may or may not be read depending on the notification of the SMS client you are using. Thoughts?Michael Katsimbris commented
Yeah, I think Davide's got it. a "new" count for any message you get since you last checked in on that conversation (web). so, since clicking on the notifications brings you to that conversation, it will bring the count back to zero (as long as no other web conversations have gone unchecked/seen).