Test a Multiple Checkbox with in Single Click

To Test a Multiple Checkbox with in Single Click.

When the Checkbox element contains with Same (Name-Locator).

WebDriver t=new ChromeDriver();

t.get("url");

List<WebElement> s=t.findElements(By.name("email_to[]")));

System.out.println(s.getSize());

for(int i=1;i<s.getSize();i++)
{
s.get(i).click(); ---->Select the Dropdown

s.get(i).click(); ---->Deselect the Dropdown
}