Mozilla Thunderbird is an email client and RSS feed reader that is free for download. It can also manage multiple POP and IMAP email accounts.
Mozilla Thunderbird has integrated antispam junk mail filter to block unwanted spam.
Another great advantage is you can run Thunderbird from a USB portable device with many free addons available for download.
Thunderbird also replicates the new look and feel of Mozilla Firefox. This gives a similar user experience across
all Mozilla software.