SMS Authenticator (SMS Verification) integration for your WordPress contact forms.
As of April 2026, iSMS 2 Factor Authentication is a WordPress otp sms plugin with 10 active installations and a 0/5 rating0. It has been downloaded 1.2K+ times in total. Requires WordPress 5.2+ and PHP 7.0+. Available on WordPress.org since 2020. Last updated 4 years ago — may have compatibility concerns.
iSMS Authenticator plugin enables you to verify mobile number by adding a layer of SMS authentication into any contact form or registration form before the form is submitted.
The iSMS Authenticator plugin will send one time OTP SMS to the user who entered mobile number before submitting the contact forms or registration forms. Once the mobile number is confirmed to be a true mobile number user, the form can be allowed to continue form submission.
iSMS Authenticator WordPress plugin is free and we cover secure gateways for the SMS plugin. Sign up an iSMS account, top up some SMS credits and you can start enjoy our SMS services in any of your WordPress forms.
User contact form verification via 2FA (Two-Factor Authentication) verification SMS
iSMS Authenticator plugin has be…
| WordPress | 5.2+ requiredTested up to 5.7.15 |
| PHP | 7.0+ required |
Version 1.0
* Intial release.
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.