The SMS Addon + Admin Secure

The SMS Addon + Admin Secure

Developed By WHMCSnow

Compatible with WHMCS v9.1

Keep clients informed about invoices, payments, services and support tickets with the SMS Addon for WHMCS. Send automated notifications, individual messages and scheduled campaigns from your billing system, using your own SMS gateway account.

SMS notifications

  • Automated client and administrator notifications with editable message templates
  • Invoice reminders, remaining invoice balance tags and payment notifications
  • Payment failure, card expiry and service termination notifications
  • Client mobile number verification with an optional client-area notice
  • Personalised messages, client notification preferences and Unicode support
  • Safe Times for ordinary client notifications

Campaigns and message history

  • Filter your audience and see matching client counts as you work
  • Schedule personalised campaigns and cancel messages still waiting
  • Monitor the outgoing queue and queue health
  • View message details and resend from message history
  • Track accepted, delivered, failed and uncertain messages, with delivery receipts where supported by the gateway
  • Send support diagnostics from message history when needed

Supported gateways

31 included integrations: 3sms, Africa's Talking, BulkSMS, Clickatell, Clickatell Legacy, ClickSend, ExtraTxt, FireText, Gateway.sa, Infobip, Bird/MessageBird, mobily.ws, Vonage/Nexmo, NusaSMS, Openvoip, Outreach, playSMS, Plivo, sendSMS.ro, Smart2Group, SMS API (.pl/.com), SMS Global, SMS Achariya, smsflatrate.net, SpLmPost, Telenor, Telnyx, Text Marketer, Twilio, Yasser and Zenziva.

Route messages by the client's country. Developers can add integrations using the existing gateway development kit. SMS charges are billed separately by your chosen provider.

Admin Secure

Available as an additional licensed option:

  • Automatically rename your admin directory after a set number of days and receive a notification
  • Receive notifications when an administrator logs in from an unrecognised IP address
  • Two-factor authentication for clients or administrators via SMS

A modern, multilingual interface

SMS Addon 6.0.0 includes a responsive administration area and a standard WHMCS dashboard widget. Interface languages include English, French, German, Spanish and Arabic, with right-to-left layout support. SMS template languages are managed separately.

Pricing

  • Semi-annually: £19.99
  • Annually: £34.99
  • Owned: £79.99

Owned licences include one year of support and updates. After the first year, support and updates can be renewed optionally for £14.99 per year.

Checkout is in GBP. The Marketplace's USD figure is an approximate conversion of the annual price.

 

Reviews

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Tom K. avatar

Tom K. @tom6791

August 25, 2020 at 07:32:54 PM

No comment provided.

  • 6 years ago
  • Version Number 5.0.8
sir hamkaransms.com avatar

sir hamkaransms.com @hamkaransms5427

August 18, 2019 at 06:21:25 PM

"sms word is fantastic, Since SMS marketing is a personal choice, brands have more opportunities to deliver superior services and offer special offers to their best customers" quotes from: www.hamkaransms.com

  • 7 years ago
  • Version Number 5.0.8
Allan Michelmore avatar

Allan Michelmore @ControlNetworks

May 2, 2017 at 05:17:53 PM

Fantastic product. I have been using this addon for years, and it has never failed me once. It has infact saved several customers from letting their domain registrations lapse. I would seriously recommend this addon over others.

  • 9 years ago
  • Version Number 5.0.2
Adrian Budzowski avatar

Adrian Budzowski @WEB_STUDIO24_LTD

March 14, 2017 at 02:36:17 AM

Perfect product. I already tested similar products, but definately recommend this one. Never had a problem with sending messages, and even if there are any its easy to contact the team and they are very helpfull.

  • 9 years ago
  • Version Number 5.0.2

Version Compatibility


Compatible with WHMCS v9.1

Full Version Compatibility


  • Selected versions of WHMCS v9.1
        9.1.0
  • All versions of WHMCS v9.0
  • All versions of WHMCS v8.13
  • All versions of WHMCS v8.12
  • All versions of WHMCS v8.11
  • Selected versions of WHMCS v8.10
        8.10.0
  • Selected versions of WHMCS v8.9
        8.9.0
  • Selected versions of WHMCS v8.8
        8.8.0
  • All versions of WHMCS v8.7
  • All versions of WHMCS v8.6
  • All versions of WHMCS v8.5
  • All versions of WHMCS v8.4
  • All versions of WHMCS v8.3
  • All versions of WHMCS v8.2
  • All versions of WHMCS v8.1
  • All versions of WHMCS v8.0
  • All versions of WHMCS v7.10
  • All versions of WHMCS v7.9
  • All versions of WHMCS v7.8
  • All versions of WHMCS v7.7
  • All versions of WHMCS v7.6
  • All versions of WHMCS v7.5
  • All versions of WHMCS v7.4
  • Selected versions of WHMCS v7.3
        7.3.0
  • All versions of WHMCS v7.2
  • All versions of WHMCS v7.1
  • All versions of WHMCS v7.0
  • All versions of WHMCS v6.3
  • All versions of WHMCS v6.2
  • All versions of WHMCS v6.1
  • All versions of WHMCS v6.0

System Requirements


  • An SMS gateway account with sufficient credit

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Developed By WHMCSnow

Changelog

v6.0.0 Released October 26th, 2026

Latest Version


  • Redesigned the addon with a modern, mobile-friendly interface and updated dashboard widget.
  • Added French, German and Spanish interface languages, with updated Arabic translations.
  • Added campaign scheduling, cancellation and queue monitoring.
  • Added resend from message history and improved existing support diagnostics.
  • Added client mobile number verification and an optional verification notice.
  • Added remaining invoice balance {balance}, payment failure, card expiry and service termination notifications.
  • Added Plivo, Telnyx, BulkSMS and FireText gateways with delivery callbacks.
  • Updated Clickatell and simplified the Twilio integration.
  • Improved Admin Secure and SMS two-factor authentication.
  • Fixed message signatures, older template formatting and various compatibility issues.

 

Previous Versions


v5.1.8 Released June 8th, 2025

View/hide detailed changelog

PHP 8.3 Support

 

v5.1.7 Released May 22nd, 2024

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*Added support for ionCube Loader v13 and PHP 8.2 *Update notifications now shown in admin area

 

v5.1.4 Released November 22nd, 2022

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Added support for ionCube Loader v12 and PHP 8.1

 

v5.1.3 Released September 26th, 2022

View/hide detailed changelog

*AddTransaction Hook added *Logging system update *Ability to disable Automatic Customer Country Code

 

v5.1.0 Released May 30th, 2022

View/hide detailed changelog

*SMS logging improvement *Styling updates *SMS signatures *Client search improved *Requirement for “Notify field” removed *General bug fixes

 

v5.0.9 Released April 7th, 2021

View/hide detailed changelog

Fixed issue with Grace Period in the licensing system

 

v5.0.8 Released March 8th, 2019

View/hide detailed changelog

*Removal of mcrypt encryption in replacement to OpenSSL *PHP 7.1 & 7.2 Support *Global SMS Tags now allowed on Admin actions

 

v5.0.2 Released February 17th, 2017

View/hide detailed changelog

*Bug fixes

 

v5.0.1 Released February 15th, 2017

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*Empty settings are no longer saved to database, saving storage and parsing performance *Default SMS gateway defined if none set and only single SMS gateway active *AJAX cache + log improvements *ROOTDIR set for SMS proxy *v4 -> v5 gateway migration issues fixed

 

v5.0.0 Released February 9th, 2017

View/hide detailed changelog

*[NEW] Enable multiple SMS gateway support *[UPDATE] Advance client country code lookup service *Huge code improvements *Styling improvements *[NEW] Test API settings button *[NEW] 2FA Custom codes / length / expiry (#937997) *[NEW] Clear SMS logs (#419252) *[UPDATE] Improved advanced logging and securely send to WHMCSnow support *[UPDATE] Auto update speed/performance increase

 

v4.0.12 Released March 21st, 2016

View/hide detailed changelog

  • [NEW] Send SMS directly from Client Summary page
  • [NEW] Admin Ticket Flagged hook added - Get notified when a ticket is assigned to you
  • [UPDATE] Certain client actions removed from "Safe Times" (Client Registration, Client Password Change)
  • [NEW] More advanced logging and securely send to WHMCSnow support
  • [BUG] Automatic unicode added to Two-Factor Authentication
  • [BUG] Bug fixed when gateway API returns credit balance of "0"

 

v4.0.11 Released January 30th, 2016

View/hide detailed changelog

  • Now parses cron's Option Flags to disable SMS's for unneeded duplicate messages
  • Invoice Paid - Now uses "Display Name" instead of shortcode in {paymentgateway} SMS tag
  • Mass SMS - Global SMS tags added to customise bulk messages

 

See also

Discord Notifications

A simplistic, free & open source hook allowing instant Discord notifications when an action is triggered.

Free
Netgsm SMS

Netgsm Sms addon provides you sending customized bulk sms and creating sms templates.

Free
MSG91 SMS/OTP Plugin

MSG91 WHMCS SMS plugin gives you the power and flexibility to stay connected with your customers by sending them an SMS and OTP's for 2FA at the crucial steps that matters the most.

Free
SMS Manager

More Advanced SMS System

Commercial
SMSQ Notify

Send SMS Notification From WHMCS by SMSQ Notify

Free