Simplify Appointment Communication with CompleteSMS
Increasing direct communication with customers, clients, and employees is key to the success of any appointment-based business. Our SMS features are designed to make communication quick, simple, and effective—whether you’re sending appointment reminders, coordinating staff schedules, or following up with clients—so you reduce missed appointments and see results faster.
CompleteSMS, Appointment Reminders Delivered
CompleteSMS has over 24 years of experience providing reliable SMS solutions for businesses. Our out-of-the-box platform makes it easy to automate appointment reminders without the time and cost of hiring a developer, so you can focus on running your practice instead of managing manual follow-ups.
Whether you’re reminding patients, clients, or customers, CompleteSMS helps you stay connected with timely, efficient messaging that reduces no-shows and keeps schedules running smoothly.
Get Started Today!24+ years of experience
The easiest way to send SMS from a computer for over two decades.
Free software, no-charge setup
No lock-in financial contract. Free cancellation anytime.
No programming needed
Browser and off-the-shelf options makes it easy to plug and play.
Unlimited customer support
Phone, Chat or email, we're here for you...it's free too.

Advantages of SMS for Reminders
No matter the size of your practice or organization, clear and timely communication is essential to keeping appointments running smoothly.
CompleteSMS provides flexible SMS appointment reminder solutions, allowing you to send a single reminder or scale up to thousands, automatically and reliably, so clients stay informed and no-shows are reduced.
Here are a few ways you can utilize SMS for reminders, beyond just appointments:
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CompleteSMS Makes Communicating with Customers Easy
CompleteSMS makes it simple to send SMS messages from a computer to any mobile device, whether through an email client, integration with a CRM, web-based application or Excel/.csv file. We offer several solutions to fit your requirements, including our application programming interface (API), or the option to send messages with via the feature-rich web portal, Outlook or Gmail.
Contact CompleteSMSSend SMS through a browser
Log in from any device through any browser. No installation required.
Web SMS
Send SMS Using New Outlook on 365
Use this add-on to send SMS through New Outlook from 365
Outlook Add-in
Send SMS from Outlook on 365
Use this add-on to send SMS through Outlook on Microsoft 365
Microsoft 365 Outlook Add-in
Connect with our API to send SMS
Configure our API with your existing software or CRM
SMS Gateway API-
Never Want to Leave Your Browser?
Send SMS through a browser
Log in from any device through any browser. No installation required.
Web SMS
Send SMS Using New Outlook on 365
Use this add-on to send SMS through New Outlook from 365
Outlook Add-in -
Send SMS Through Email. Easy Peasy.
Send SMS from Outlook on 365
Use this add-on to send SMS through Outlook on Microsoft 365
Microsoft 365 Outlook Add-in -
Sending Texts In Bulk?
Connect with our API to send SMS
Configure our API with your existing software or CRM
SMS Gateway API

