double the message notifications for the same message

As it says on the tin, I'm worried that these message notifications are breaking down because i've been pm'ing a tonne of people and not hearing back as well as recieving twice as many notifications whenever I get any interest. 

I'm guessing the double notifications are from LFG forum posts/LFG Listing threads? You follow these by default and naturally people also click the 'follow this topic' button. Head to the offending threads and 'unfollow' them, you'll still get notifications for replies as the creator. Its a long standing bug... As for the PMs, only time will tell on that one. If you are truly concerned that they aren't sending you could reach out to the Devs using <a href="mailto:team@roll20.net" rel="nofollow">team@roll20.net</a> who would potentially be able to confirm that the recipient has received the message (not sure how viable that is from a privacy perspective however). If the messages are in your message inbox as a thread then they exist and delivered though... probably...