Screen looks very similar to the PC screen. Once you select 'IMAP' from the drop down menu it will change the POP tab to IMAP and add an advanced tab. Leave the 'Remember password' field and 'Check for new mail every so many minutes' field blank . Screen looks very similar to the PC screen. By following this example you can delete and expunge your GEM mail ONLY from the web interface.
Screen looks very similar to the PC screen.
Screen looks very similar to the PC screen. Then click on 'OK' to exit the Mail Server Properties Window. Screen looks very similar to the PC screen. Screen looks very similar to the PC screen, except the Mac screen has an extra 'Close Message Window' option. It does not matter which of those two options you select.