I installed sendEmail on Ubuntu server 12.04 LTS based on a recommendation from http://linuxneophyte.com/sendemail-a-light-and-simple-command-line-mailer/
The package installed (not visible with dpkg but /usr/bin/sendEmail exists) and that was followed by this prompt:
The following packages were automatically installed and are no longer required: php-mail-mime php-net-socket php-mdb2-driver-mysql php-mdb2 libpango1.0-common php5-gd libmcrypt4 libt1-5 libhal1 php-net-smtp php5-pspell libhal-storage1 libaudiofile0 php5-mcrypt php-auth dbconfig-common tinymce php-mail-mimedecode Use 'apt-get autoremove' to remove them.
Earlier, the above list of packages to remove included courier-ssl which I removed, but I'm not sure about the others. Should I keep these packages or remove them?