Voicemail: A Modern Messaging Solution

What is Voicemail?

Voicemail is a system that allows callers to leave voice messages when the recipient is unavailable to answer the phone. These messages are stored in the recipient’s voicemail box and can be retrieved and listened to later. Voicemail systems are used in both personal and professional settings to ensure important messages are not missed.

How Does Voicemail Work?

Voicemail systems operate by recording and storing voice messages. Here’s a simplified overview of the process:

Call Handling

When a call is not answered, it is automatically redirected to the voicemail system.


The system prompts the caller to leave a message after a predefined greeting. The caller’s message is recorded and saved in the recipient’s voicemail box.


The recipient is notified of a new voicemail through various means, such as a notification on their phone, an email alert, or a text message.


The recipient can access their voicemail box to listen to the message. This can be done through the phone, an email service, or a web interface, depending on the voicemail system.

Benefits of Voicemail


Voicemail ensures that messages can be left and received even when the recipient is not available to take the call.


Recipients can listen to and manage their voicemails at their convenience, without the pressure of real-time communication.

Record Keeping

Voicemails provide an audio record of messages, which can be useful for reference and documentation.


Users can personalize their voicemail greetings to provide specific information or instructions to callers.

Integration with Other Services

Modern voicemail systems often integrate with email and transcription services, providing additional convenience and functionality.

FAQ - Frequently Asked Questions

What is transcription process?
Each audio file is tested, transcoded, and then transcribed using the Whisper model from the OpenAI API.
How long does it take to get a transcript?
The processing time for your transcript will depend on the length of the audio file. Typically, shorter voice messages can be transcribed quickly using OpenAI speech-to-text API.
What are the maximum file size for transcription?
Note that our transcription service has a file size limit of 20 MB.
What is the maximum duration you can transcribe?

We currently have a file size limit of 20MB. Given that most voice messages are encoded with a constant bitrate and a single channel (mono, no stereo), we can calculate the maximum duration of a file using the following equation:

Duration ( seconds ) = File Size ( bits ) Bitrate ( bits/second )

Applying this equation to our 20MB limit and a bitrate of 64 kbps (commonly used by the iPhone recorder app), we arrive at a maximum duration of approximately 43 minutes and 41 seconds. To easily calculate durations for different file sizes and bitrates, you can use our audio duration calculator.

Do I need to transform the audio before sending it to my email address?
No, this is not necessary. will automatically transcode your audio file upon receipt into the format expected by the OpenAI API.
Can ChatGPT transcribe audio to text?
Yes, ChatGPT can transcribe audio to text, but there are more specialized AI models specifically designed for this task, such as Whisper. Whisper is a state-of-the-art transcription tool that offers higher accuracy and efficiency in converting audio to text. If you're looking for the best results in audio transcription, Whisper is the ideal choice.
Why transcription over email?
Our email-based automatic transcription service is designed to break down barriers and provide universal access to voice message transcription. By leveraging email as our input and delivery method, we're making it easy to automate and integrate with existing platforms. Since email is an established communication method, it's likely to persist, offering longevity.