You can use the 'Share' option in Confluence to email anyone a link to a page or blog post. The recipients can be Confluence users or any email address(es).
To share a link to a Confluence page or blog post:
Go to the page or blog post you wish to share
Choose Share
Enter a username, group or email address, and select the appropriate user, group or email address from the list of suggestions Repeat this process to add multiple recipients to the list.