Smaily for Contact Form 7 is a free WordPress plugin designed to enhance email marketing efforts by seamlessly integrating with the popular Contact Form 7 plugin. This tool allows users to automatically subscribe newsletter sign-ups to a Smaily subscriber list through forms created using Contact Form 7. Key features include simple integration with various form elements, support for multiple value checkboxes, and the capability to add hidden fields and radio buttons for diverse options.

The plugin is compatible with PHP versions 5.6 and above, WordPress 4.6 and later, and requires Contact Form 7 version 4.0 or higher. Additionally, reCAPTCHA integration or the Really Simple Captcha is needed to ensure form security. Comprehensive online documentation and code samples are available, making it easier for users to navigate the setup and utilization of the plugin.