Read the original article at https://blog.knowbe4.com/how-to-recall-an-email-in-gmail
People accidentally send emails to the wrong recipients every day. The impact of these incidents can be relatively minor if there is no sensitive data included in the email body or attachments – it might be inefficient or slightly embarrassing, but it’s not a security incident. However, a security incident can occur if personally identifiable information (PII), privileged or protected information, corporate data, or other sensitive data is included in the email.
Read the original article at https://blog.knowbe4.com/how-to-recall-an-email-in-gmail