How to change mail from address using x header

The X-Header!

To change the From address using an X-Header, you'll need to use the X-From or X-Sender header, depending on the email client or server you're using. Here are some examples:

Using X-From header:

1. In your email client (e.g., Gmail, Outlook, Thunderbird), compose a new email or reply to an existing one.
2. In the email header, add the following line:

   X-From: [email protected]

   Replace [email protected] with the desired new From address.

Using X-Sender header:

1. In your email client (e.g., Gmail, Outlook, Thunderbird), compose a new email or reply to an existing one.
2. In the email header, add the following line:

   X-Sender: [email protected]

   Replace [email protected] with the desired new From address.

Using X-Envelope-From header:

1. In your email client (e.g., Gmail, Outlook, Thunderbird), compose a new email or reply to an existing one.
2. In the email header, add the following line:

   X-Envelope-From: [email protected]

   Replace [email protected] with the desired new From address.

Note: The X-Header is not a standard header, and its support may vary across different email clients and servers. Some email clients or servers might ignore or reject emails with non-standard headers.

Additional considerations:

• When using X-From, X-Sender, or X-Envelope-From headers, the original From address might still be visible in the email header, depending on the email client or server.
• Some email clients or servers might not allow you to change the From address using these headers, especially if the email is already sent or if the sender's email address is not authorized to send emails from a different address.
• If you're using a mail server or a mail relay, you might need to configure the server to allow or reject emails with non-standard headers.

Before using these headers, make sure to check with your email client or server administrator to ensure that they are supported and won't cause any issues.