Gravity Forms Email Verification is a great way to verify or authenticate your users when they submit a form.

WordPress Calculator helps you to build any type of estimation form. You can create custom calculations in minutes.

Captcha plugin is the best security solution that protects your WordPress website forms from spam entries.

Gravitizer allows you to transform your traditional Grvity Forms into Material UI designs with one click.

The YITH Quick Order Forms plugin also provides advanced user management capabilities: