A simple machine learning algorithm called naive Bayes can separate legitimate email from spam email.

一个简单的机器学习算法，朴素贝叶斯算法可以把正规邮件从垃圾邮件里面分离出来。

youdao

No legitimate business asks for your credit card information or passwords by email.

没有哪家正规商家会用邮件问你的信用卡信息或者密码。

youdao

Phishing attacks are common online, and usually begin with the arrival of a legitimate-looking email containing a link to a realistic-looking website - often a bank or email provider.

钓鱼攻击在网上很常见，常常是以收到看似合法的电子邮件开始，邮件中含有逼真的网站(常常是银行或电子邮件供应商)的链接。

youdao

Spam might show up in my inbox a few times each week, while I need to remember to check several layers of junk mail filters for false positives legitimate email marked as spam by an aggressive filter.

FORBES: Ignore Your Mail And Lose Thousands of Dollars

The initial row centred on whether it was legitimate for communication via private email accounts to be accessed by journalists and others if they made a request under the Freedom of Information Act.

BBC: UK Politics

No financial institution or legitimate company will contact you by phone or email to ask for your social security number, credit card number or other personal information.

FORBES: Protecting Yourself From Online Hackers