Is ripplesmail.com a spam domain?

[thankrobot]

I am looking at some potential spam emails from a domain and trying to figure out if it spam or not? What is B52Mailer Email Marketing?

Received: from 101.78.203.18 (mail18.wt1.ripplesmail.com [101.78.203.18])by mail18.wt1.ripplesmail.com (Postfix) with ESMTP id BE1021CB30C