Elastic Email Add-on VS Elastic Email WordPress Plugin

For example, I know WP Plugin has its own dashboard. But about Add-on I was not able to find any information about logs and stats. Only by making requests to the online help as I’ve read in this post: How can I check Elastic Email log

Are there advantages and drawbacks of using an Add-on over Elastic Email Sender WP Plugin? https://wordpress.org/plugins/elastic-email-sender/