Curious about the path an email followed to your inbox or trying to troubleshoot delivery issues? Viewing the full email header can reveal valuable details about the message’s journey, origin and authenticity. Find out here how to view all email header lines for a message in iCloud Mail at iCloud.com ⤓.
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How to View Full Email Header Lines in iCloud Mail at iCloud.com
Time needed: 1 minute
To access all email header lines for a message in iCloud Mail using iCloud.com:
- Open the message for which you would like to access full headers.
- Click the More actions three-dots menu button.
- Select Show All Headers in the menu that has appeared.
- Find all header lines for the email in the header area now.
Here’s where: All headers start beneath the To: line and end just above the subject line.
- Click Hide to return to the regular message display.
Their word: Apple include information on viewing header lines in the iCloud User Guide.
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How to Copy Header Lines in iCloud Mail at iCloud.com
To copy the header lines from an email — to send to support, for example — using iCloud Mail in a browser at iCloud.com:
- Open display of all headers using Show All Headers; see above.
- Highlight all header lines.
Here’s which: The header area begins just below the standard To: line and ends just above the content area; the header lines are set off in light gray and a smaller font. - Copy the highlighted area using the browser menu, context menu or operating system keyboard shortcut.
Keyboard shortcuts: Press Command C (Mac) or Ctrl C (Linux and Windows) to copy.
On an iPhone?
How to View Full Email Headers on iPhone: iCloud, Gmail, etc.
More headers:
How to View Full Email Source and Header in Fastmail
How to View Email Headers in Gmail
How to Access All Email Header Lines in Outlook.com
How to View Full Email Header Lines in iCloud Mail at iCloud.com: FAQ
Can I see the full message source in iCloud Mail?
No.
While you can access the full source for an email in iCloud Mail if you connect to it using an email program, of course, the web interface at iCloud.com does not let you view or download it.
What are some notable header lines?
- To:, Cc:, From:, Subject:: the header lines typically displayed when you view an email.
- Date: when the message was sent.
- Authentication-Results:: a consolidation of email authentication test results.
- Received:: tracking information inserted by SMTP email servers.
(Tested in a desktop browser; first published June 2023, last updated June 2026)