E-mail annoyance is a term used to describe the unwanted messages that are sent to an email address. Spam is one of the most common forms of e-mail annoyance, which refers to unsolicited emails that are sent in bulk and often contain malicious links or advertisements. Other forms of e-mail annoyance include phishing emails, which are designed to trick users into providing personal information, and malware, which can be spread through malicious attachments.