You can use both. If you're traveling, your Macs at home will likely be shut off and not downloading your new mail, so you'll see everything coming in via the web mail. I ALWAYS have Mail set to leave mail on the server for a week (even when not traveling) - it's saved my bacon a few times when I've deleted something by mistake that I actually needed. When you get home, and turn on your Mac at home again, it will download everything into Mail.
You can do this with pretty much any mail system BTW. I'm assuming that you're using POP. Of course, with IMAP, everything stays on the server anyway, so you can access all of it via the web from anywhere. If you travel a lot or access mail from several different computers, it may make more sense to use IMAP. However, I don't see the IMAP settings for Earthlink and let's not confuse the issue for now.
You can find the email instructions for Mail for Earthlink/your capecod.net account here:
http://support.earthlink.net/articles/emai...ail-program.phpThe specific settings for capecod.net are here:
capecod.net
POP Server: pop.capecod.net
SMTP Server: smtpauth.earthlink.net
SMTP Authentication Username:Your Email Address
SMTP Authentication Password:Your Email Password
For instructions on how to configure SMTP Authentication, click here.
NNTP News Server: news.west.earthlink.net or news.east.earthlink.net
FTP Server: ftp-www.capecod.net
Personal Web Page Format:
http://home.capecod.net/~mailboxnameDynamic. If your software requires DNS server settings, use: 207.69.188.185, 207.69.188.186, and 207.69.188.187
Sign-On Format: userid@onemain.com
SMTP authentication instructions here:
http://support.earthlink.net/articles/emai...-send-email.php - although they don't seem very helpful, sending you back to the first link. (I think once you've entered the info above in the Accounts section of Mail's preferences, all you will need to do is check the "use only this server" and then in the Advanced section, click on Authentication - Password.