Easy to deploy, easy to configure, it can be used as an additional protection for outbound emails (also known as senders). The only issue is that when you have multiple domains under one account it sometimes could give issues in terms of performance. I would highly recommend this product, especially if you are looking forward to protect all of your domain names! We were facing some attacks using spoofed sender addresses, we also wanted to stop phishing attempts so we decided to add this service into our infrastructure.