Filewall is very powerful and easy to use. It can be configured to block outbound emails from all domains. It also can block outbound emails from specific domains. It has a very nice GUI and can be set to have different rules per email account. There is some lag time between when an email is sent and when the user receives the notification that the email was blocked. This is a great tool for blocking spam, but sometimes I receive emails from companies that are not spam that I do not want blocked. It is also a nice way to block outbound emails from specific domains. I use it to block outbound emails from certain domains and have rules for specific email addresses. It's a very simple tool but provides enough protection for your data. I do not have anything to dislike about it. If you are looking for an easy-to-use tool that will protect you from malware this is the right choice. It does its job really well. You can use it to scan emails and files before sending them to other people or sharing them online. It also has a built-in antivirus which is great because it makes the process even easier.