In the 2017 RfC, the Daily Mail was the first source to be deprecated on Wikipedia, and the decision was challenged and reaffirmed in the 2019 RfC. There is consensus that the Daily Mail (including its online version, MailOnline) is generally unreliable, and its use as a reference is generally prohibited, especially when other sources exist that are more reliable. As a result, the Daily Mail should not be used for determining notability, nor should it be used as a source in articles. The Daily Mail has a "reputation for poor fact checking, sensationalism, and flat-out fabrication". The Daily Mail may be used in rare cases in an about-self fashion. Some editors regard the Daily Mail as reliable historically, so old articles may be used in a historical context. (Note that dailymail.co.uk is not trustworthy as a source of past content that was printed in the Daily Mail.) The restriction is often incorrectly interpreted as a "ban" on the Daily Mail. The deprecation includes other editions of the UK Daily Mail, such as the Irish and Scottish editions. The UK Daily Mail is not to be confused with other publications named Daily Mail that are unaffiliated with the UK paper. The dailymail.com domain was previously used by the unaffiliated Charleston Daily Mail, and reference links to that publication are still present.

There is consensus that news broadcast or published by CNN is generally reliable. However, iReport consists solely of user-generated content, and talk show content should be treated as opinion pieces. Some editors consider CNN biased, though not to the extent that it affects reliability.