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Sigma Voice

Top 3 Broadcast Messaging Channels

Call, text and email are the top 3 channels used quickly communicate with a large group of people fast.

Nowadays, individuals are accustomed receiving all 3 types of automated messages from organizations they have a existing relationship with.

Set Up <15 Minutes <15 Minutes <15 Minutes
Message Format Audio Recording Text/Link Text/HTML
Message Length Up to 5 minutes 160 Characters Unlimited
Urgency High Medium Low
When 9am to 9pm 9am to 9pm Any Time
Delivery Rate High Medium to High Medium to High
Open Rate 95% 95% 25%
Opt Out Yes Yes Yes
Reply Call Caller ID Reply to Text/Call Reply to Email/Call
Pricing Per Minute Per SMS Per Email
Cost/1000 $50 $50 Varies

In today's competitive environment, each channel can be used on a regular basis to increase revenue, decrease expenses and increase efficiency.


How much does it cost?

It costs less than $6 to call 100 people.

How fast are the calls dialed?

Sigma Voice can dial 10 to 50 calls per minute. So 100 calls can be completed within just a few minutes.

How long does it take to set up a call broadcast?

It only takes a few minutes. Just record your message and click a couple of buttons and your call broadcast will be set up.

How do I record the audio message?

Just call our toll free dedicated recording phone number.

Will my contacts know who is calling them?

Yes! Your company phone number will be clearly displayed as the Caller ID. (Your company name may also appear as well.)

How do we upload our contacts database?

Simply log in to your Sigma Voice account and upload the file directly. The system supports common file formats like CSV, TXT, XLS, XLXS etc.

Will my contacts database be safe?

Sigma Voice takes your privacy very seriously. We have implemented industry standard security and encryption protocols. Also, Sigma Voice does not sell, rent or provide phone lists of any kind.

We're Seeing Stars

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.

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.

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!!!

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.

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!!!

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.

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!

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