Best Voice Calling API & SDK Providers for Kylas

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Exotel is a cloud-based business phone system that is reliable and secure. It is easy to set up. No additional infrastructure or equipment is required. It allows sales and support teams to work from anywhere. Your customers will enjoy a personalized calling experience. Exotel's drag-and-drop builder makes it easy to track, manage, and build call flows. Easy setup of SMS campaigns. We guarantee the best delivery rates. Delivery to more than 190 countries. Easy user verification via SMS and calls. The best success rates and non-intrusive.