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.
f[s] ⊆ u � s ⊆ f⁻¹[u] https://www.glc.us.es/~jalonso/calculemus/15-mar-24/