How to add external mail header

Adding an external mail header to an email can be a bit tricky, but I'll provide you with some general guidance. The specific steps may vary depending on the email client or programming language you're using.

What is an external mail header? An external mail header, also known as a "BCC" (Blind Carbon Copy) header, is a way to add an email address to the "To" or "CC" field of an email without including it in the visible recipient list. This is often used to send emails to external services, such as mailing lists or email marketing platforms, without revealing the recipient's email address.

How to add an external mail header:

Using an email client:

  1. Open your email client (e.g., Gmail, Outlook, Thunderbird).
  2. Compose a new email or reply to an existing one.
  3. In the "To" or "CC" field, enter the external email address you want to add.
  4. Separate the external address from the other recipients with a semicolon (;) or a comma (,).
  5. Make sure to include the external address in the "BCC" field, if available.

Example: [email protected]; [email protected]

Using a programming language:

  1. Use a programming language like PHP, Python, or Java to send an email programmatically.
  2. Use the email client's API or a library to create an email message.
  3. Add the external email address to the "To" or "CC" field using the API or library.
  4. Use the BCC property or a similar attribute to specify the external email address.

Example (PHP using PHPMailer):

$mail = new PHPMailer();
$mail->setFrom('[email protected]');
$mail->addAddress('[email protected]');
$mail->addBCC('[email protected]');
$mail->Subject = 'Test Email';
$mail->Body = 'This is a test email.';
$mail->send();

Important notes: