# Spam Complaints Spam complaints refer to the number of times that recipients of an email report it as spam or unsolicited email. Spam complaints are a measure of the effectiveness of an email marketing campaign, as they indicate that the recipients do not want to receive the emails and are taking action to report them as spam. Spam complaints can have a negative impact on the reputation of the sender and the deliverability of their emails. Email providers and spam filters use various signals, including the number of spam complaints, to determine whether an email should be delivered to the recipient's inbox or sent to the spam folder. As a result, a high rate of spam complaints can lead to emails from the sender being blocked or filtered as spam, which can reduce the effectiveness of the email marketing campaign. To avoid spam complaints, it is important to follow best practices for email marketing, such as obtaining explicit permission from recipients to send them emails, providing a clear and easy way to unsubscribe from the email list, and ensuring that the emails are relevant and useful to the recipients. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.smtpd.dev/master/faq/email-deliverability/spam-complaints.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.