options = webdriver.ChromeOptions()
options.add_argument('window-size=1200x600')
driver = webdriver.Chrome(chrome_options=options)

driver.get('https://mail.ru/')
driver.implicitly_wait(3)

username = driver.find_element_by_id("login")
password = driver.find_element_by_id("password")

username.send_keys("username")
password.send_keys("password")

driver.find_element_by_id("mailbox__auth__button").click()
driver.implicitly_wait(3)

driver.get_screenshot_as_file('mail.png')

options.add_argument('--headless')
options.add_argument('--disable-gpu')