I have changed the way that site emails are sent out.
We had been using a service called Mandrill but they have now gone to a premium service only. We have now switched to a service called Sparkpost.
You shouldn't notice any difference but if you do please let me know.
I have added a weekly digest newsletter to the site that highlights the most popular topics of the week, this will be sent out every Saturday morning.
The email respects the Receive Site Mailings option found in your site account pages so you can easily opt out of receiving the email.