The best part of this tool was its interface, it's very easy to use and understand. I liked how simple it was to upload my documents in order to create invoices or quotes. It also allowed me to track all the information about each customer so that when they receive an email with an attachment from me, I can easily see what needs to be done next. Sometimes there were some issues while uploading files but nothing too major. This program helped us manage our business better by being able to send out multiple emails at once without having to go back and forth between different programs.