The best part of guestview is it's simplicity. It's easy to use, fast, and effective. I love how easily you can send an email from your phone or computer. I do not like that you cannot have multiple emails in one account. You can only have one main email that sends out all other emails. I wish there was more ways to customize the emails. Also, I wish this program was cheaper. Sometimes it takes a while for the emails to go out. I'm trying to keep up with our guests and make sure they are getting their information. This program has been very helpful in doing so.