The Mozilla email client, Thunderbird will have scam detection capabilities. We all have seen phishing emails that try to have you click on a link that sends you to a bogus website rather then the website you thought you were going to. They try to get your usernames and passwords from you. If Thunderbird thinks an email message is a possible scam message – it will notify the user with a visual queue. Similar to spam tools, it will also have a “not a scam” button to denote safe messages – for example notifications of online statements from banks or stock institutions.
According to the open-source blog, Among its features, Thunderbird will reconcile the hostname shown in an href’s display link and the underlying destination URL — which is one of the primary methods for ‘phishing’ people into visiting sites that aren’t as they appear.There is a final warning dialog if a user proceeds and clicks a link, and gives one last chance to cancel.