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CoalaWeb Contact is a complete component to create a feedback form on your website. Using this extension you can set the fields and tips for users of your project.
CoalaWeb Contact

To begin with, I note that the component is absolutely free, so you don’t have to pay for a subscription, or to make any unnecessary actions. The only rule developed by the use of back links on his project.
As for the extension, you can set additional fields, as well as for the captcha, to send a copy of itself to e-mail, etc.
In addition, the update of this plugin via the admin panel directly, it is very easy to update the system.
The only drawback might be, probably, the lack of Russian language for the module. But it solved the issue.
Support languages: English, Hungarian, Portuguese.
Update in 1 click.
Send a message to support.
Setting permissions for users.
Installation of a redirect.