Horde is a web-based email application that allows you to read, send and organize your emails as well as manage and share calendars, contacts, tasks, notes, files and bookmarks with your other email users. The horde application by default enabled under your cPanel account. The following KB will help you to get the email headers in webmail interface.
Step 1: Log in with your account username and password
Step 2: Select the Horde Webmail client
Step 3: Click on the message
Step 4: Finally, go to the + Other options and then select View Source
Step 5: This will display the E-mail message header.
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