For which emails can the #SALE_EMAIL# variable be used in Bitrix?

Question

1C-Bitrix

Bitrix has standard variables #DEFAULT_EMAIL_FROM# and #SALE_EMAIL#, will the latter work in all event templates and types?
And is it possible to add your own variables (for example, define them in the init.php file)?

Answer 1

When adding a mail template in the edit form, a list of available fields in the template is indicated at the bottom of the input field.
And while #DEFAULT_EMAIL_FROM# is available in almost all templates, #SALE_EMAIL# is available only in sale module templates.
You can use your variables by hanging on the OnBeforeEventSend event

Bitrix\Main\EventManager::getInstance()->addEventHandler(
    'main',
    'OnBeforeEventSend',
    ['TemplateModifier', 'onBeforeEventSend']
  );

  class TemplateModifier {
    function onBeforeEventSend(&$fields, &$templateData)
    {
      $message = $templateData["MESSAGE"];
      if(strpos($message,'#CUSTOM_VARIABLE#') !== false)
      {
        $fields['CUSTOM_VARIABLE'] = "значение своей переменной";
      }
    }
  }