A good spam filter is essential for managing unwanted emails while preserving genuine correspondence. The effectiveness of spam filters can vary based on the email client in use. Thunderbird comes with built-in spam filtering capabilities, making it a convenient choice for users of that platform. In contrast, Outlook, particularly version 6, does not have robust spam filtering out of the box and typically requires additional software to effectively manage spam. Users seeking to minimize spam while ensuring important emails are not lost should consider their email client when selecting a spam filtering solution.