help a reader "subscribe by email" to my DW (without an account)

I know that Feedburner offers a service to do this, but that means giving my subscriber email away.

Is there a way to do this using only my own stuff?

I could get a person's email in a screened comment.

Then add it to a private email list.

And then maybe have the RSS feed somehow trigger sending an email?

Oh wise techies, can you put the pieces together?

Happy to pay for expertise.