What is Arattai Messenger, India's swadeshi Whatsapp alternative? All you need to know Arattai is India's indigenous messenger platform, which is an alternative to WhatsApp. Here is all you need to know about Zoho's Arattai. What is Arattai Messenger? All you need to knowMeanwhile, the Arattai Messenger is an Indian alternative to WhatsApp, offering users to send texts, voice notes, make phone calls and video calls.