Get your 30 day free trial with 100 free calls or texts! Sign Up Free

Reach your
by phone with
Sigma Voice

Engage with your contacts directly on their mobile and/or landline phone. Maximize your marketing dollars with 'one-to-many' automated calling and mass texting from Sigma Voice.

To help you get started with Sigma Voice, we’ll give you 30 day free trial with 100 free calls or texts.

Get started Get a demo

Voice Broadcasting

Manually calling your customers one-at-a-time can be very costly and time consuming. When it's important to get an urgent message to all your customers fast, voice broadcasting service delivers your pre-recorded telephone message to 100s or 1,000s of your customers in a very short amount of time at a fraction of the cost. Mass automated phone calls, like manual calls, are either answered by a human or a machine.

Learn more about voice broadcasting

SMS Broadcasting

Texting 100s or 1000s of your customers and employees one-by-one by copying and pasting the same text message over and over again can be monotonous and take hours. Alternatively, a bulk texting service delivers your personalized text message directly to mobile phones within a few minutes. Your recipients can reply directly to you as well.

Learn more about sms broadcasting


Our IVR systems are designed to elevate your customer interaction experience, offering advanced features like Text to Speech, Speech Recognition, and seamless DTMF integration. With robust security, high capacity, and cloud-based scalability, we ensure your business stays connected and secure. Dive into our world of efficient IVR Surveys, custom scripting, and database integration to discover how Sigma Voice can transform your customer service and enhance your business operations.

Learn more about IVR

The Sigma Voice Difference

Here's what makes Sigma Voice the smarter choice.

Easy To Use

Setting up a call or text broadcast is so easy that you'll feel like a pro within just a few minutes.

Super Fast Delivery

Just sit back and watch as your calls and texts are sent out very quickly to all your contacts.

Real-Time Reports

You'll see the summary report as well as a detailed report that shows who got what & when.

Friendly Customer Support

We're happy to help anyway we can day or night even on weekends and holidays.

You're In Good Company

Trusted by non profits, home services, universities and more.

United Steel Workers Logo
Fairway Manor Apartments Logo
Unite Here Logo
Iam Logo
Globe Life Logo
American Red Cross Logo
Gargiulo Logo
Sears Logo

Competitive Pricing

Sigma Voice offers competitive pricing for mass calling and texting.

Tons of features are included free like answering machine detection, real-time reporting, scheduling broadcasts, automatic opt-out, text to speech and more.

Also, knowlegable & friendly phone, email and chat support are included.

Learn more about Pricing

We're Seeing Stars

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!

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.

Haith Johnson profile picture Verified Customer

Haith Johnson

Retail Store

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!!!

Mark Hamilton profile picture Verified Customer

Mark Hamilton

Nonprofit Organization

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.

Andrenia Burgis profile picture Verified Customer

Andrenia Burgis

Political Campaign

This is the first time I used this company and am extremely pleased with the excellence in customer service. There was no need large or small that was not met. I highly recommend them!!!

Emma Otto profile picture Verified Customer

Emma Otto

Retail Store

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.

Ken Doke profile picture Verified Customer

Ken Doke

Nonprofit Organization

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.


Some frequently asked questions.

Sigma Voice is a telecom service provider offering an automated call system and mass texting services.

Churches, schools, universities, unions, charities, clubs, nursing homes, staffing agencies, home services (HVAC, carpet cleaners, pest control), e-commerce stores and more.

For a call broadcast, specify your Caller ID, upload your contacts, record your audio message then schedule your calls.

The setup time is about 5 to 15 minutes.

For a text broadcast, select a phone number (local or toll-free), upload your contacts, type up your text message then schedule your texts.

The setup time is about 5 to 15 minutes.

Our system includes a phone number formatter that works with any 10 digit phone number. The standard is (XXX) XXX-XXXX. Before each call or text broadcast, any duplicate phone numbers will be removed as well.

You can sign up for free with your organization's email address.

Sigma Voice accepts multiple forms of payment exclusively through PayPal.

Sigma Voice is flexible. There are no contracts and no commitments. You can easily cancel your account online in two clicks. There are no cancellation fees. You can start or stop your account anytime.

It's easy! Ask them to enter your name as the referral source when they sign up for their free trial.

Also, if/when your referral becomes a paying customer, Sigma Voice will send you a $25 referral bonus!

Sigma Voice Icon

Enhance Communication with
Sigma Voice

Get started free

Discover tailored support for your communication needs. Collaborate with a Sigma Voice expert to develop a custom IVR, SMS, and Voice Broadcasting strategy that aligns with your unique business objectives.


Schedule consultation

Popular Posts From Our Blog

Check out the Sigma Voice blog to learn about mass calling and texting best practices.