On Thu, 20 Aug 2015 18:12:25 -0600 jd1008 wrote:
Does gmail server keep a flag that the messages were already downloaded?? If so, how can a user prevent that flag from being set on the gmail server?
Go to your gmail account settings and look at the pop/imap tab. There is a setting for what the server should do with the mail after it is read by pop and one of the options is: do nothing, leave it there.