Bulk SMS service
Send bulk SMS messages without the reply-all chaos
Text your entire group in minutes, whether that's 50 contacts or 50,000!
No contracts · 30-day money-back guarantee
Features to make your life easier
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Replies come only to you Members never see each other's responses
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Send images Send photos, flyers, screenshots, and more
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Schedule messages Write it now, deliver it at exactly the right time
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Web-based. No apps to install No mobile apps for you or your members to install
Bulk SMS service built for how groups actually communicate
Simple, powerful tools built for group leaders who need reliable communication
How to send bulk SMS messages with CallMultiplier
Upload a list or enter contacts manually. Your members are saved, so you only have to do this once.
Write a new message or use a saved one, then choose to send to your full list or to specific subgroups.
Send your message now or schedule it for a specific date and time. We deliver it to your members in minutes!
We guide you through carrier registration
Before your first message goes out, there is a one-time registration process for anyone sending texts to U.S. phone numbers.
U.S. mobile carriers require anyone sending texts through a messaging service to complete a registration process called 10DLC. We walk you through it: you provide the necessary information and we handle the submission on your behalf at no cost to you.
Our team works with you directly until you are approved and ready to send.
No contracts · 30-day money-back guarantee
Send automated calls too
Bulk SMS messages are great for short messages. Your recipients will read them and read them quickly. But sometimes you need to send a longer message. A message that's in your own voice.
With CallMultiplier you can send automated phone calls in addition to bulk SMS messages. Simply record your voice message of up to 2 minutes, choose when you want it to be sent and to whom, and we'll do the rest for you.
More tools to help you manage your group
Everything you need to run a group of any size
What our customers say
"Because of CallMultiplier, our volunteer Fire Department crew has been able to respond to fires up to half an hour faster."
"CallMultiplier dramatically increased attendance at all of our events!"
"We are raving fans of CallMultiplier and recommend it to everyone! We depend on it, especially during hurricane season."
Frequently Asked Questions
Text responses from your members are displayed in your CallMultiplier interface in real-time. You can also be notified by email of new replies. Unlike many bulk SMS solutions, your members' responses won't be broadcast to everyone in the group.
When you enable texting you are assigned a unique 10-digit number for your outgoing text messages. Because we gather your members' responses in your CallMultiplier interface, you are not able to customize this to your own phone number.
Standard texts support up to 320 to 480 characters depending on your plan.
Enhanced Text Messages let you send messages up to 1,600 characters and include up to 5 images.
Exact limits and costs vary by account type. See our pricing page for details.
Yes, CallMultiplier is not to be used for unsolicited, telemarketing, or solicitation messages. Account holders are responsible for complying with applicable laws. Members must also agree to abide by our Terms of Service and Responsible Use policies when creating a new account.
No contracts, no long-term commitment required, and no hidden fees. Your purchase is backed by our 30-day money-back guarantee. If you decide that CallMultiplier isn't right for you within your first 30 days of service, we'll give you a full refund of your first purchase.
No. CallMultiplier is entirely web-based, so you don't need any special hardware, nor do you need to install any apps or software on your computer or mobile device.
We've been helping customers send automated calls and bulk SMS messages for more than fifteen years. Our product is designed to be very easy to use, without unnecessary features getting in your way.
We also pride ourselves on having very helpful, responsive customer service. Unlike many bulk SMS companies, our in-house customer service is available 24/7/365 to help you whenever you have questions. We also believe in our product so much that we offer a 30-day money-back guarantee in case you try CallMultiplier and decide it's not for you.
