Other POP3 downloading options Check every .. minutes: Specify the download interval. Leave emails on server: (This option only appears when you are not using Dial up) If you tick this option, Mail essentials will leave emails on the POP3 server after downloading instead of deleting them. Do not download mail larger than: Here you can specify a maximum download size. If mail exceeds this size, it will not be downloaded. If mail is larger, then: You can either choose to delete mail larger than the maximum allowed size, or send a message to the postmaster.