You can use campaign analytics to examine how a mass mailing done, and make options to further improve in the future. Look for a Instrument that’s consumer-friendly and supported by reliable documentation and support. Look for a tool which offers a bunch of self-services support selections that can assist https://www.upwork.com/services/product/development-it-let-s-encrypt-premium-ssl-installation-service-or-fix-https-related-errors-1390579816356401152?ref=project_share&tier=0