End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
https://123deta.com/document/q0616rlq-目次認証大規模システムおけるUltraPossum概要導入大規模システムでの注意.html