RansomSaver is a free addin to block ransomware emails in Outlook. This addin adds an extra tab in MS Outlook and keeps monitoring the incoming emails. If it finds any incoming email having malicious attachments or ransomware, it immediately deletes that. In addition to that it scans the current email folder for further detentions. It creates a separate folder in Outlook where you can see the email that it has deleted so far. Not only automatically, but if you think there are some malicious emails, then you can manually scan the emails as well.