An image forming apparatus and method of displaying a multilingual keyboard uses an identifier of a language-specific entity, such as a country-code top-level domain of a domain name in an e-mail address to automatically output an input device configuration, such as a keyboard configuration, in accordance with stored keyboard table information corresponding to country identification information of a target recipient using the e-mail address of the target recipient, thereby increasing the convenience of use. The image forming apparatus receives an input email address of a target recipient, detects country identification information in the email address, searches stored keyboard information for that corresponding to the detected country identification information, and displays the keyboard in the language corresponding to the country identification information found in the searching of the stored country identification information.