Parameters

$subject

(string) The email subject.

$sitename

(string) The name of the site.

$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.