Create a newsletter for email with Adobe

Adobe Spark can create an online newsletter, no coding skills required. 

https://spark.adobe.com/sp/onboarding

However Spark Page is NOT compatible with any email sending services.  You will need to send out a generic email containing your Spark Page's URL or post the URL on social media channels for people to go to.

Adobe Spark Knowledgbase & Support is on Zendesk

https://adobespark.zendesk.com/hc/en-us/categories/202688167-Adobe-Spark

Hope that helps.

Emails are just HTML like webpages, although a lot more restrictive because of how email clients work. But why don't you want to use a service provider? Those are much easier and provide more features to build and test your emails.  If you build in DW you would eventually need to send it through something because no Adobe tools have a mail server.