How do I install the Excel SMS Add-in?

Close Excel, download SMSGatewayCenterExcelAddin.zip, run the ExcelSmsSender-x64.msi installer as Administrator, then open Excel. The SMSGatewayCenter ribbon should appear without an unsigned add-in block.

Windows Excel Add-in · Free Download

Excel SMS Add-in for Microsoft Excel

Send bulk SMS straight from Microsoft Excel with the free SMSGatewayCenter Excel SMS Add-in. A native ribbon tab gives you Send SMS, Group SMS, Sent Report, Check Balance, and Settings. Built for Windows 10/11 and Excel 64-bit. SMS only (WhatsApp is not on the ribbon).

Download Excel Add-in Free Account

Windows 10 / 11 · Excel 2013+ or Microsoft 365 (64-bit)
.NET Framework 4.8 · MSI installer (run as Administrator once)
Package: SMSGatewayCenterExcelAddin.zip

SMSGatewayCenter Excel SMS Add-in for Windows Microsoft Excel

Excel SMS Add-in system requirements Windows Excel NET

What is the Excel SMS Add-in?

The Excel SMS Add-in is a Windows Excel add-in (.xll, Excel-DNA) that adds an SMSGatewayCenter ribbon tab to Microsoft Excel. You send SMS through the SMS Gateway Center HTTPS API from your spreadsheet. No separate desktop app is required after install.

Use it when your numbers and message variables already live in Excel: payment reminders, promotional SMS, OTPs for internal lists, or campaign lists you manage in worksheets. Credentials are stored securely under your Windows user profile (DPAPI).

Ribbon Features

After install, open Excel and use the SMSGatewayCenter ribbon:

SMS – Send SMS, Group SMS, Sent Report
Admin – Check Balance, Change Password
About – Settings, About Us

API host defaults to unify.smsgateway.center over HTTPS (TLS 1.2+). Logs are written to %LocalAppData%\ExcelSmsAddin\log.txt if you need support diagnostics.

Excel SMS ribbon Send SMS Group SMS Sent Report

How to Install

Close Excel if it is open (the .xll is locked while Excel loads it).
Download SMSGatewayCenterExcelAddin.zip and extract it.
Run ExcelSmsSender-x64.msi as Administrator (UAC prompt is expected).
If Excel is still running, close it and choose Retry when the installer asks.
Open Excel. The SMSGatewayCenter ribbon should appear. The installer trusts the publisher certificate and registers the signed add-in under Program Files.

Uninstall from Settings → Apps → Excel SMS Sender (admin may be required).

System Requirements

Operating System

Windows 10 or Windows 11

Microsoft Excel

Excel 2013+ or Microsoft 365 · 64-bit

.NET

.NET Framework 4.8

Permissions

Administrator once (UAC) for certificate trust and MSI install

Download & Start Sending

Get the free package, install the MSI, sign in with your SMSGatewayCenter account, and send personalized SMS from the columns you already manage in Excel. Need an account first? Sign up free or contact sales.

Download Excel Add-in API Docs

Send SMS from Excel with a signed Windows add-in. Download now.

Frequently Asked Questions

1. What is the SMSGatewayCenter Excel SMS Add-in?

A free Windows Excel add-in (.xll, Excel-DNA) that adds an SMSGatewayCenter ribbon so you can send bulk SMS from Microsoft Excel via our HTTPS API. WhatsApp is not on the ribbon.

2. What are the system requirements?

Windows 10 or 11, Excel 2013+ or Microsoft 365 in 64-bit, .NET Framework 4.8, and Administrator rights once during install.

3. How do I install it?

Close Excel, download SMSGatewayCenterExcelAddin.zip, run ExcelSmsSender-x64.msi as Administrator, then open Excel. The SMSGatewayCenter ribbon should appear.

4. What can I do from the ribbon?

Send SMS, Group SMS, Sent Report, Check Balance, Change Password, Settings, and About Us.

5. Where are credentials stored?

Under HKCU\Software\ExcelSmsAddin, with password / API key protected via Windows DPAPI.

Testimonials

Why do Great Businesses Trust SMS Gateway Center?

Kurlon IT

2022-08-04

We have tied up with other SMS providers also, but SMS GatewayCenter is quite good. Good Service from the team. We are very happy with the service be it accounts related or technical issue. We always get good response.

INOX Air Products

2018-02-09

We have an excellent experience with SMS Gateway Center. The services and support has been of very high standard.

Shalabh Arora

2025-04-11

I’ve been using SMSGatewayCenter’s bulk SMS and WhatsApp services since early 2022 for my small business, and the experience has been fantastic. The platform is intuitive, and the message delivery is incredibly reliable, reaching my customers without fail. The 24/7 support team is quick to assist, and the cost-effectiveness is a big plus. It’s transformed how I connect with my audience, and I highly recommend it to other entrepreneurs! (Google Revirews)

Reflex

2025-04-11

We’ve been using your bulk SMS services for a few months, and the results have been phenomenal. The open rates and customer engagement have gone through the roof. Highly recommend for any business looking to scale fast! (Google Revirews)

Vedanth Gowda

2025-04-18

I’m Vedanth Gowda, leading a finance business, and I’ve been leveraging SMSGatewayCenter’s bulk SMS and WhatsApp tools —absolutely transformative! The platform’s speed and precision in delivering financial alerts to my clients are unmatched, giving me a competitive edge. Samrat’s expertise in tailoring notification workflows for market updates was a standout, and the robust security features instilled trust. The affordable pricing and proactive support team make it a no-brainer. Perfect for finance pros aiming to elevate client trust and efficiency! (Google Revirews)

Naval Bhatnagar

2025-04-12

From day one, the team at SMS GATEWAY CENTER guided us through setup, testing, and launching campaigns. Their support is A+. Whether you’re new to SMS marketing or experienced, they make it smooth. Thank you Aakash. (Google Revirews)

Send SMS from Excel in Minutes

Download the free SMSGatewayCenter Excel SMS Add-in for Windows, install the MSI, and start sending bulk SMS from your spreadsheets with a native Excel ribbon.

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