Premium user here, got to agree with the points made by Skellam. I don't need another messaging system, and especially one that requires the other party to install software and sign up to a service ? They've already done that for their other systems, why force them to do it for another propriety system ? Its a very early 90's approach. Evernote used to be king in this space, but if you annoy your user base there are plenty of alternates to flick to. I just cant comprehend how evernote can mess up so badly. You were in a good space with your users, plenty of word of mouth recommendations. Not so much anymore.