Research from Intel reveals that it's still hard for internet users to recognize phishing emails. The company has a quiz online for several years that shows emails to users and of which users have to determine whether the email is legitimate or a phishing mail.
Of the more than 19,000 participants of the test, only 3% was able to correctly identify all emails. About 80% was tricked by at least one phishing mail. On average the participants scored 65.4% which means that on average 1 out of 4 phishing emails was missed. According to Intel the results show that users should make more efforts to recognize phishing mails.
On the internet there are several quizzes that test the recognition of phishing mails.