How to find the Message-ID of an email
Support asked for a Message-ID? Here's how to find it in Gmail, Outlook, and Apple Mail.
A Message-ID is a unique identifier (defined by RFC 5322) that every email gets when it's sent. It looks something like <CAE+abc123xyz@mail.gmail.com> and lives in the email's headers.
If we ask for one, it's because we want to track a specific email through Fyxer's pipeline — far faster and more reliable than "the one from Tuesday morning".
How to find a Message-ID
Gmail (web)
Open the email
Click the three-dot menu (More) in the top-right of the message
Select Show original
A new tab opens with the raw email. The Message-ID is listed near the top
Copy the value (including the angle brackets
< >)
Outlook (web)
Open the email
Click the three-dot menu at the top of the message
Select View → View message source
Look for the line starting with
Message-ID:Copy the value (including the angle brackets)
Outlook (desktop — Windows)
Open the email in its own window (double-click it)
Go to File → Properties
The Internet headers box at the bottom contains the full headers
Scroll until you see
Message-ID:and copy the value
Outlook (desktop — Mac / new Outlook)
Open the email
Click … (More options) → View source
Find the line starting with
Message-ID:
If your version of Outlook for Mac doesn't show View source, you can also forward the email as an attachment (Message → Forward as Attachment) to yourself and open the resulting .eml file in a text editor — the Message-ID will be near the top.
Sharing it with support
Just paste the Message-ID into the chat or email thread you're working on with us. Include the angle brackets — they're part of the identifier.
Example: <CAE+abc123xyz@mail.gmail.com>
If you're sending a few, a quick list works perfectly.
Still have questions?
Head to the chat in the bottom right of your Dashboard.