How does this add-on work, does it work like this? does it send alert for EVERY message read? for BOTH users? 1.user joey sends message to max--> please dont spam 2. user max reads message 3. alert to user joey --> "max read your message" 4. max replies to joey ---> hello mr joey, i did not spam 5. joey reads message 6. alert to user max --> "joey read your message" is this how it works? . .