authkey.io is powered to deploy SMS, Email, and Voice. Users can send valuable Data via all three channels individually or parallelly. Authkey offers a single API platform for SMS, Voice, and Email. The application was built keeping in mind that it would be used for a variety of purposes, such as sending OTPs and sending notifications, SMS through API, Voice CallsAPI integration, Emails, Secure OTP, Login OTP, 2 Factor Authentication, etc. A variety of channels are necessary in order to communicate effectively. SMS, voice calls, or emails are all possible channels. It is imperative that you use a platform built specifically for high-volume operations. A fallback mechanism is in place when a first priority channel cannot be reached and you wish to transmit information through another channel. This feature is automatic and does not require any human intervention.