How to view message headers in RoundCube

Message headers hold the full routing and delivery details of an email. They are often needed when tracing spam or investigating a delivery problem.

View the headers

1. Open the message you want to inspect.

2. In the message toolbar, click More, then Show source.

   

A new window shows the message's full source, including all of its headers - the Received lines that trace its path, the From, To, and Subject, and authentication results such as SPF and DKIM.