Sayo

Sayo provides free calls & free messages between sayo's users all over the world and international cheap calls to non-sayo numbers worldwide.

Features:

- free calling,

- free texting (chat),

- sending attachments: short videos, audios, pictures,

- voice and HD quality video calling,

- call transfer- connect your conversations partner with other number or Sayo contact,

- call waiting - two separate conversations at the same time,

- voicemail as mp3 to email delivery.