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Celebrating 19 years in business!


About Sigma Voice

Since 2004, Sigma Voice has been providing high quality mission critical automated calling and mass texting to organizations across the USA & Canada.

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The Sigma Voice Difference

Here's what makes Sigma Voice the smarter choice.


The highly available network has tons of phone lines which means your pre-recorded message can be delivered to 1,000s of your contacts in minutes. Dedicated phone lines are also available for mission critical emergency applications.


Segment your lists. Dial multiple campaigns simultaneously. Schedule calls in advance. Personalize with Text-To-Speech (TTS). Survey your contacts. Say Happy Birthday to each person on their birthday automagically.


We're experts in the automated calling business and we're happy to share the best practices we've learned in order to help our customers not only avoid common mistakes but also increase overall efficiency.

Do Not Call/Text

If some of your contacts do not want to receive your phone call or text message, just add their phone number to your block list to make sure you will never contact them again.


Our platform actively monitors phone call activity in order to identify and prevent any unwelcomed and unsolicited calling.


Our system admininistators implement the best practices when it comes to security, redundancy and disaster recovery..


We're Seeing Stars

Haith Johnson profile picture Verified Customer

Haith Johnson

Absolutely LOVE THIS SERVICE!!! I recommend using Sigma Voice for any growing business!! We have got great responds & is a good way to stay in touch with your customers base! Helps us to turn customers to Loyal Customers to VIP Customers!!!

Ken Doke profile picture Verified Customer

Ken Doke

I have been using Sigma Voice for a few years now on a number of campaigns. They have always been reliable and competitive. Their customer service is phenomenal. I highly recommend.

Mark Hamilton profile picture Verified Customer

Mark Hamilton

Sigma Voice exceeded our expectations for our call out needs. When we needed changes made they were happy to do so and performed changes in a timely manner. I highly recommend Sigma Voice.

Kristin Taylor profile picture Verified Customer

Kristin Taylor

Senior Living

Sigma Voice was so easy to set up. I needed to get an immediate message out to my 60+ family members. It’s affordable, the reports are amazing, and the customer service is beyond what I expected on a Sunday afternoon. Highly recommended!

Emma Otto profile picture Verified Customer

Emma Otto

Retail Stores

We have used SigmaVoice for our business for a few years now, and it has been a very good experience. The website is simple, straightforward, and easy to navigate. Customer service is excellent; professional and prompt.

Pedro Hernandez profile picture Verified Customer

Pedro Hernandez

Medical Offices

This service is fantastic. Setting up automated calls is super easy and affordable. I highly recommend it.

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