<form id="autoLoginForm" action="https://www.google.com/accounts/ServiceLoginAuth?service=mail" method="post">
<input type="hidden" name="ltmpl" value="default" />
<input type="hidden" name="ltmplcache" value="2" />
<input type="hidden" name="continue" value="https://mail.google.com/mail/?" />
<input type="hidden" name="service" value="mail" />
<input type="hidden" name="rm" value="false" />
<input type="hidden" name="hl" value="en-GB" />
<input type="hidden" name="Email" value="{email_adress}" />
<input type="hidden" name="Passwd" value="{wachtwoord}" />
<input type="hidden" name="rmShown" value="1" />
<input type="hidden" name="signIn" value="Sign in" />
<input type="hidden" name="asts" value="" />
</form>
<script type="text/javascript">
document.getElementById("autoLoginForm").submit();
</script>