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Last Updated: Tue, Apr 4, 2023


Simple & straightforward pricing like it should be.

Just 6¢ a call

The 6¢ rate for phone calls is based on a 25-30 second connected phone call which is the average call duration. Additional charges apply for longer phone calls. There's no charge for calls that do not connect.

Just 6¢ a text

The 6¢ rate for text message is based on a 160 character message. Emojis can be included. Additional charges apply for including images or videos. There's no charge for incoming text messages.

Looking for a custom application or an enterprise solution? Sigma Voice can help! Contact us.

Your Calling & Texting Account

No account random fees. Pay as you call or text. Your balance doesn't 'expire'. Cancel anytime.

No Junk Fees

There's never any set up fees or 'account' fees. Only pay when you actually send out calls or texts. That's how it should be.

Pay As You Go

Just pay as you call or text your contacts. It's that simple. Monthly packages are also available.

Credits Never Expire

The funds you add don't automatically disappear one day. When you're ready, your account balance will be there.

Cancel Anytime

If you no longer need our services, that's ok. There's no commitment so you can cancel anytime. We'll be here if you need us again.

Secure & Flexible Payment Options

Sigma Voice accepts all major forms of payment through PayPal. (You don't need a PayPal account to pay.) Payments are automatically added within a few minutes 24/7/365.

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Some frequently asked questions.

Yes! Sigma Voice offers a free trial of the calling service only. In order to qualify, please register using a company email address like

You can call 1,000 contacts for about $50 in about 10 minutes. That's about 100 calls per minute! This example is based on a 30 second voice recording, which is an average recording length for an automated phone call. This is based on 10 cents per minute.

Yes. This is especially useful for organizations with multiple locations. Simply add each Caller ID one time then it's available to be used in a call broadcast.

Your recording can be as long as you want. Be sure to record in a quiet room to make sure recording is as clear as possible.

Sigma Voice accepts many popular formats like Microsoft Excel, CSV and TXT. Each phone number should consist of 10 digits. Parentheses, dashes and periods or ok. Also, duplicate phone numbers will be automatically removed.

Sigma Voice accepts multiple forms of payment exclusively through PayPal.

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.

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.

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.

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.

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