General :: Command Line Email (Gmail) Setup

I am pretty new to C.L.I/text editing work. So maybe its a bit old-fashioned but I am interested in learning how to send email via the command line. I am running 10.04 32 bit

Situation: I have followed the explicit and step-by-step actions at http://klenwell.com/is/UbuntuCommandLineGmail

Question: Upon completion, when trying to send a test email to myself via gmail (from CLI) I get the following error: "msmtp: no recipients found". In CLI below it asks me to explicitly pick a mailx to download. I think I already have mailx as when I type mailx I get "no mail for primary".

Here is my work
Code:
:~$ sudo apt-get install msmtp mailx
[sudo] password for:
Reading package lists... Done
Building dependency tree
Reading state information... Done
msmtp is already the newest version.
Package mailx is a virtual package provided by:
mailutils 1:2.1+dfsg1-4ubuntu1
heirloom-mailx 12.4-1.1
bsd-mailx 8.1.2-0.20090911cvs-2ubuntu1

You should explicitly select one to install.
E: Package mailx has no installation candidate
:~$ gedit ~/.msmtprc
:~$ chmod 600 ~/.msmtprc
:~$ gedit ~/.mailrc
:~$ echo -e "testing email from the command line" > /tmp/test_email
:~$ mailx -s "mailx gmail test" xxxxxxx@gmail.com < /tmp/test_email
msmtp: no recipients found

Here is ~/.msmtprc
Code:
# config options: [URL]#A-user-configuration-file
defaults
logfile /tmp/msmtp.log
# gmail account
#account gmail
auth on
host smtp.gmail.com
port 587
user xxxxxx@gmail.com
password xxxxxx
from xxxxxx@gmail.com
tls on
tls_trust_file /usr/share/ca-certificates/mozilla/Equifax_Secure_CA.crt
# set default account to use (not necessary with single account)
#account default : gmail
and here is ~/.mailrc

Code:
# set smtp for mailx
# gmail account (default)
# $ mailx -s "subject line" -a /path/attachment recipient@email.com < /path/body.txt
set from="xxxxxx@gmail.com (xxxxx)"
set sendmail="/usr/bin/msmtp"
set message-sendmail-extra-arguments="-a gmail"