apply_filters( 'user_request_action_email_headers', string|array $headers, string $subject, string $content, int $request_id, array $email_data )

Parameters

$headers

(string|array) The email headers.

$subject

(string) The email subject.

$content

(string) The email content.

$request_id

(int) The request ID.

$email_data

(array) Data relating to the account action email.

• 'request'
  (WP_User_Request) User request object.
• 'email'
  (string) The email address this is being sent to.
• 'description'
  (string) Description of the action being performed so the user knows what the email is for.
• 'confirm_url'
  (string) The link to click on to confirm the account action.
• 'sitename'
  (string) The site name sending the mail.
• 'siteurl'
  (string) The site URL sending the mail.