I want to use contact form in my language, not in English. How can I do that?

Contact Form 7 has been translated into many languages. See if the languages folder contains a language file for your language.

The locale setting of Contact Form 7 follows the locale setting of WordPress. Once you change the WordPress locale to, Contact Form 7 is also changed. See how to change the WordPress locale here.

See also: Contact Form in Your Language

Just another contact form plugin for WordPress. Simple but flexible.