If you want to email newsletters - you can look at:
http://docs.adobe.com/docs/en/cq/current/wcm/campaigns.html#Adding ExactTarget Email Tools to your email
On the other hand, if you want the ability to extract content from a given CQ page and email that - it more involved.
All content in AEM is a JCR resource.
You can use the JCR API to read those resources. Content in pages is stored under /content -- as shown here:
[img]WOrkflow.png[/img]
HTML located on a page is just property of node. THat is - HTML like this:
<p><b>Geometrixx World Headquarters</b><br>
1234 Wilshire Blvd.<br>
Los Angeles, CA 90210<br>
USA</p>
<p><b>Geometrixx US East Coast</b><br>
10 Avery Street<br>
Boston, MA 02111<br>
USA</p>
<p><b>Geometrixx EMEA</b><br>
Barfuesserplatz 6<br>
4051 Basel<br>
Switzerland</p>
<p><b>Geometrixx APAC</b><br>
14 Temasek Blvd.<br>
Singapore</p>
<p> </p>
Is a text property that belongs to /content/geometrixx/en/toolbar/contacts/jcr:content/par/15_1204887676656.
This property can be read via the JCR API. Therefore - read HTML using the JCR API and then place it into a collection - like an ArrayList.
You can then dynamically create HTML that you want to email. Dump all the content from the collection into the new HTML that you want to email. Use styles to make the email look the way you want it to look.
You can place all this app logic into an AEM workflow. It may require developing some custom workflow step. If you do not know how to create a custom workflow step - see:
https://helpx.adobe.com/experience-manager/using/creating-custom-aem-workflow-steps.html
So this is not an out of the box feature - but it can be developed using AEM, the JCR API and custom workflow steps.
