Send an email through Flow when a list item is updated

Hi, You could create a field in the same list and store the email addresses of the selected hosts separated by semicolon for the very first time the Flow gets triggered on list item creation and on update of the list item when the updated list item Flow triggers, check this field to get newly added host(s) and send email and update this field with the latest hosts. This will re-trigger the Flow, ensure you quickly check if the fields match and cancel if they match. Thanks.