Open-source email app Mozilla Thunderbird features highly efficient spam filters that use Bayesian statistical analysis. After a bit of training, the spam detection rate is excellent, with virtually no false positives. If you don't want spam in your Mozilla Thunderbird inbox, enable the spam filter.
How Thunderbird Automatically FILTERS Junk Email – Thunderbird SPAM Settings | MOVE SPAM to Junk
The Bayesian analysis that Mozilla Thunderbird uses for spam filtering assigns a spam score to each word and other parts of an email. Over time, it learns which words tend to appear in spam and which ones appear most often in good messages.
To have Mozilla Thunderbird filter spam for you:
Go to the Thunderbird hamburger menu and select Options > Account Settings.
