I like that it lets me create as many emails in my account, which is great because of how busy we are at work! It also makes things easier when sending out mass messages to our team members about something they need or want (like new software). There isn't much room left so this could be improved by adding more space between each row/email address you're creating - but other than just making everything bigger, there's not really anything else wrong with their service overall. We use improvmx primarily to send group announcements through Slack channels such as #announcements-all where everyone can see what has been posted without having access individually via different slack accounts within an organization.