By the way, I use the free version of Proton Mail as opposed to paying for the premium version.
I like that Hive PM is free, based on Hive. I also noticed PeakD has something similar, a public chat and an ability to message people. Would Hive PM connect to Peakd chat or would Hive PM be more like a side chain or somehow disconnected or whatever from the Peakd chat and messages?
I think of it as another frontend for the blockchain and no, it has not integrated with peakd.