Email Spam filter is a firewall like based application, works with two lists: White and Black list, allows you to restrict which mail can enter to your inbox.

Email Spam filter runs in background as a service and checks for new email in a specific time, (User defined at the settings menu), detect and delete spam automatically based on sender.

Key Features:
Detect and delete spam automatically based on sender.
Low power consumption.
Simple User Interface and easy to use.
Notification in status bar about new unfiltered emails. Can be disabled from app settings.
White list sender. Use this option when you need to receive mails from a sender.
Add free application.
Can toggle data connection On/Off automatically.
Can toggle sync settings On/Off automatically.
Dropbox support for database sync.