The ability to use Black Pearl for multiple purposes from campaigns to newsletters to events. We can also create custom templates which is very helpful when you have multiple emails to send out in a short amount of time. I dislike that black pearl does not sync well with other applications like outlook or gmail. It's clunky and doesn't seem to work as well as it should. You need to be able to customize your template for each event, campaign, etc. If you are looking for something that will help you save time then this may not be the best choice. We are using it to keep our customers up to date on special promotions we offer them. It helps us stay organized and get all of our emails sent out at once.