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.
モーレツ! Org mode 教室 その1: 素早くメモを取る https://www.mhatta.org/wp/2018/08/16/org-mode-101-1/