Private note – Private messages service allows users to create one-time notes and share them with each other.

https://sites.google.com/view/privnotecomblog/home
https://privnotecom.wordpress.com/
https://privnotecom.tumblr.com/
https://privnotecom.mystrikingly.com/
https://telegra.ph/Send-Notes-Securely-With-Privnote-06-11