Unable to find Element using selenium(Htmlunitdriver) - selenium

Question

public static void main(String[] args) throws InterruptedException {
System.setProperty("webdriver.chrome.driver", "C:\\EclipseWorkSpace\\Seleniumdownloads\\chrome\\chromedriver_win32\\chromedriver.exe");
//WebDriver driver = new ChromeDriver();
// Selenium 3.0 we need to down load Html unit driver.
// URL : https://github.com/SeleniumHQ/htmlunit-driver/releases
WebDriver driver = new HtmlUnitDriver();
driver.manage().window().maximize();
driver.manage().deleteAllCookies();
driver.manage().timeouts().pageLoadTimeout(40, TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.get("https://www.freecrm.com/");
driver.findElement(By.xpath("//span[contains(text(),'Log In')]")).click();
System.out.println(" Before login" + driver.getTitle());
Thread.sleep(10000);
WebElement email = driver.findElement(By.xpath("//input[#name='email']"));
email.sendKeys("test32145#hotmail.com");
// driver.findElement(By.xpath("//input[#name='email']")).sendKeys("test2135#hotmail.com");
driver.findElement(By.xpath("//input[#name='password']")).sendKeys("SWeet$123");
driver.findElement(By.xpath("//div[#class='ui fluid large blue submit button']")).click();
Thread.sleep(3000);
driver.findElement(By.xpath("//span[contains(text(),'Contacts')]")).click();
System.out.println(" after login" + driver.getTitle());
Thread.sleep(2000);
// read.sleep(millis);
driver.close();
}