Problem details
BP wanted more information around how mass emails work and how he would be able to track the ones that fail. He also enquired on how to resend only the ones that have not succeeded.
Solutions details
Referred the bp to article: https://www.sagecity.com/sage-global-solutions/sage-crm/b/sage-crm-hints-tips-and-tricks/posts/checking-progress-in-mass-emails
Also directed the BP to the Youtube channel for Sage CRM, where numerous training articles were available: https://www.youtube.com/results?search_query=sage+crm+mass+emails