For secure form submissions on WordPress, here are some top plugins that prioritize functionality and security:
WPForms
Features: Drag-and-drop builder, form templates, spam protection with CAPTCHA, honeypot, and anti-spam tokens.
Security: Supports reCAPTCHA, custom CAPTCHA, and anti-spam tools to prevent bot submissions.
Bonus: GDPR compliance tools for handling user data securely.
Formidable Forms
Features: Advanced form building, conditional logic, calculations, and file upload features.
Security: Built-in reCAPTCHA and Akismet spam protection integration to prevent spam submissions.
Gravity Forms
Features: Customizable forms with conditional logic, payment gateway integration, file uploads, and more.
Security: Offers Google reCAPTCHA, honeypot techniques, and Akismet integration to reduce spam.
Ninja Forms
Features: Customizable forms with drag-and-drop, file uploads, multi-part forms, and conditional logic.
Security: Integrates with reCAPTCHA and uses spam prevention tools to block unwanted submissions.
Everest Forms
Features: Clean, drag-and-drop interface, file uploads, multi-step forms, and multiple layouts.
Security: Google reCAPTCHA and honeypot protection for securing forms against bots.
For additional security measures, you can install plugins like Wordfence or iThemes Security to secure your overall site, including forms, from threats. These plugins help with firewall settings, login protection, and regular security checks, providing a good layer of protection around your forms and entire site.