For Android 1.5, normally it come with HTC Mail e-mail client. you can utilize this application to fetch your e-mail using POP3 or IMAP4 or Outlook Exchange.I use HTC Mail for several mail which is hosted on gmail domain hosted. so it can have label as it's folder.
too bad, this HTC Mail only able to syncronize the inbox folder/label of those google mail hosted domain. for folders beside inbox, you need to trigger the mail to be fetch using Refresh menu.
there are other things I experienced with this HTC Mail, which it crashed more than i expected.
but alas, even though the application crash, the phone it self still steady.
