To download a free Email program, click the Thunderbird link below:
http://www.mozilla.com/en-US/thunderbird
Install it.

Change its default options so attachments work:
            Thunderbird
            Tools
            Options
            Advanced
            General
            Config Editor
            left click on "mail.content_disposition_type" to highlight it
            right click and pick modify
          enter "1"
            ok
            left click on "mail.inline_attachments"
            right click and pick "toggle" to "false"
            ok
            ok

A possible set of choices for Setup Info:
Thunderbird, File, New, Account, Email, John Doe, johndoe@triangleairpark.org
IMAP (stores files on server instead of PC, best if also using webmail or several PCs)
incoming server = mail.triangleairpark.org
outgoing server or SMTP server = mail.triangleairpark.org
incoming-user-name = johndoe@triangleairpark.org
account-name = johndoe@triangleairpark.org
outgoing-user-name = johndoe@triangleairpark.org
Thunderbird, Tools, Account settings, Outgoing server(SMTP), Edit, Port 587
Also check mark in "username and password." Use secure connection: No. OK
Thunderbird, Tools, Account settings, johndoe@triangleairpark.org, Server Settings, Port 143,
                      Use secure connection: Never. OK

Using POP3 (stores files on local PC) instead of IMAP, then use port 110, instead of 143.


After above is working,
you can try in-coming and out-going servers with TLS if available.
Accept dreamhost certificate.