Ringless voicemail information

Ringless voicemail, also called a voicemail drop, is a method in which a pre-recorded audio message is placed in a voicemail inbox without the associated telephone ringing first.

The concept of Ringless Voicemail emerged in the mid-2000s as voicemail systems and mobile technology evolved. Initially developed to aid businesses in reaching their customers without interrupting their day-to-day activities, it quickly gained traction in various industries for its efficiency and effectiveness. The first time this service was mentioned was in a front page article about Slydial in The New York Times on August 2, 2008.^[1]

Ringless Voicemail technology bypasses the traditional phone network to deposit the message directly into the server that hosts the voicemail. Typically, the process involves the use of VoIP (Voice over Internet Protocol) technology to transfer the message from the sender's server to the recipient's voicemail server without triggering a call event on the recipient's device. According to the patent filed by MobileSphere ^[2] the technology uses the Voice over IP network that connects with the mobile and landline carriers to force the call to the voice mail box of the end user. In addition to Slydial the company offer Slybroadcast a ringless voice mail platform for organizations.