Template

    <div style="padding:20px;margin-top:30px;border:1px solid #292929;background-color:#dad1d2;">
       
        <table>
            <tr>
                <td colspan="2"><span onclick="javascript:Element.toggle('emailtable');" style="cursor:pointer;cursor:hand;">You can send corrections, questions or your opinion about this article by mail to the author. Click on this text...</span></td>
            </tr>
        </table>

        <form action="" method="post">
            <table id="emailtable" style="display:none;">
                <tr>
                    <td>Your Name</td>
                    <td><input type="text" id="m_name" name="m_name" value=""></td>
                </tr>
                <tr>
                    <td>Your Email</td>
                    <td><input type="text" id="m_email" name="m_email" value=""></td>
                </tr>
                <tr>
                    <td valign="top">Your Message</td>
                    <td><TEXTAREA name="m_message" id="m_message" rows="15" cols="50"></TEXTAREA></td>
                </tr>
                <tr>
                    <td></td>
                    <td><INPUT type="submit" value="Submit"></td>
                </tr>
            </table>
            <INPUT type="hidden" id="emailip" name="emailip" value="">
            <INPUT type="hidden" id="emailua" name="emailua" value="">
            <INPUT type="hidden" id="m_mailto" name="m_mailto" value="tk@thomas-kahl.net">
            <INPUT type="hidden" id="m_subject" name="m_subject" value="Usercomment: ">
            <!--    This is the most important field - with this, the plugin form action is activated:    -->
            <INPUT type="hidden" id="jxformaction" name="jxformaction" value="simpleformmail.php">
        </form>
    </div>

Form Action

// Read the POST values
$mailtext=mosGetParam($_POST,'m_message');
$mailto=mosGetParam($_POST,'m_mailto');
$mailsubject=mosGetParam($_POST,'m_subject');
$mailadress=mosGetParam($_POST,'m_email');
$mailname=mosGetParam($_POST,'m_name');

// If the most important parameters are submitted
if ($mailtext && $mailadress && $mailto) {
    // Create the mailbody
    // Add some bsaic inormation to the message
    $mailtext.="\n\nSubmitted by (IP): ".mosGetParam($_POST,'emailip')."\nProcessed (Server date and time): ".date("D M j Y G:i:s T")."\n\nAll Fields of the Input-Form:\n";
    // Add all formfields we have received
    foreach ($_POST as $key => $eingang) {
        if ($key <> "m_message" && $key <> "emailip") $mailbody.=$key." - ".mosGetParam($_POST, $key)."\n";
    }
    // use the standard-joomla function to send the mail
    if (mosMail( $mailadress, $mailname, $mailto, $mailsubject, $mailbody, 0)) {
        if ($MOSACTIVATEPAT) {
            // If no error, show success
            // The first parameter is the internal template name and should not be changed (unless you know what you do)
            // The second parameter is the Placeholdername for your template. You can choose whatever you like, but keep in mind, that this name has to be unique. It is always a good idea to add a unique prefix
            // The third parameter is the value you want to give to the placeholder. You can also use PHP-functions here
            $tmpl->addVar('rows', 'FORMSUCCESS', '<p class="message">SUCCESS, we have sent the mail!</p>');
        } else {
            echo "SUCCESS";
        }
        $tmpl->addVar('rows', 'FORMSUCCESS', '<p class="message">SUCCESS, we have sent the mail!</p>');
    } else {
        if ($MOSACTIVATEPAT) {
            $tmpl->addVar('rows', 'FORMSUCCESS', '<p class="message">Ooops, we could not send the mail!</p>');
        } else {
            echo "ERROR sending the mail";
        }
    }
} else {
    if ($MOSACTIVATEPAT) {
        $tmpl->addVar('rows', 'FORMSUCCESS', '<p class="message">Ooops, we could not send the mail!</p>');
    } else {
        echo "ERROR sending the mail";
    }
}