Mark has a Samsung Galaxy S8 and he wants to know how he can download all his email at once. Leo says that the ISP that hosts his mail throttles downloading of email, so he can only download a portion of the email at one time. It's designed to cache email, not download it. If his mail server supports POP3, however, that means it is designed to download the mail. That's really how he'll want to do it. But even then, he probably won't be able to download it all at once.