CleanSMTP is the most affordable way to protect your mail server from unwanted email and downtime.
If you are using CleanSMTP then all the email sent to your mail server will automatically be inspected for all known Unsolicited Commercial Emails (UCE or Spam Email),Viruses and suspicious content before being forwarded to your own mail server. Read more...
CleanSMTP is also the best value hosted spam blocking service designed to support any mail server. CleanSMTP is also supplied with excellent support and free Sender Policy Framework (SPF) advice to help prevent email forgery.