Hello everyone!
I wanted to make a "release notes" page in Сonfluence, but faced the problem of sending notifications. As an inspiration and example, I would like to do both on this page: https://confluence.atlassian.com/jirasoftware/jira-software-release-notes-776821069.html

The built-in "watch" function sends notifications only to users with an active license. In this case, we can give access to an unlicensed user in Confluence(add to permission group), including anonymous.
Question: is it possible to somehow solve a similar issue of sending emails to users? We are not against paid solutions, but $ 3.70 per month for each client looks like a lot, for a newsletter subscription 
Another variation is using third-party services for mailing, but I would like to stay in the atlassian ecosystem.
(Statuspage, as I understand it, is also not suitable for this.)
Thanks!