In Zoho mail, peeking behind an email's appearance is easy. With but one click or key, you can see all email header lines (which reveal the email's origin, for example, and often the email program used to send it) and switch to the full message source (which reveals the HTML code used, for instance).
View the Source of an Email Message in Zoho Mail
To see the complete source to an email in Zoho Mail:
- Open the message (in the preview pane, a tab or its own window).
- Press s.
- You can also click the Show Original icon (in the message header area, in between Print View and Message Garbled).
- Now click Show full message.

