How to check mail header in gmail

To check the mail header in Gmail, you can follow these steps:

Method 1: Using the Gmail web interface

1. Log in to your Gmail account.
2. Open the email you want to check the header for.
3. Click on the three vertical dots at the top right corner of the email.
4. Select "Show original" from the dropdown menu.
5. A new window will open with the email's source code, including the header information.

Method 2: Using Gmail's built-in "View original" feature

1. Log in to your Gmail account.
2. Open the email you want to check the header for.
3. Click on the three vertical dots at the top right corner of the email.
4. Select "View original" from the dropdown menu.
5. A new window will open with the email's source code, including the header information.

Method 3: Using a third-party browser extension

1. Install a browser extension like "Header Inspector" or "Email Header Viewer" for Chrome or Firefox.
2. Log in to your Gmail account.
3. Open the email you want to check the header for.
4. Click on the extension's icon in the browser toolbar.
5. The extension will display the email's header information in a new window or tab.

What to look for in the mail header

The mail header contains a wealth of information about the email, including:

• The sender's email address and IP address
• The recipient's email address
• The email's subject and body
• The date and time the email was sent
• The email's size and type (e.g., text, HTML, attachment)
• The email's authentication information (e.g., SPF, DKIM, DMARC)

By checking the mail header, you can verify the authenticity of the email, identify potential spam or phishing attempts, and troubleshoot email delivery issues.