I like that it allows you to send emails directly from your inbox without having to leave an email address which can be used by others when sending out information.
It also has other features such as being able to upload documents into folders so they are easy findable later if needed but this isn't always necessary because there's usually someone who knows where things have been stored already anyway! We use kleasoftware mostly internally at work just using our own system rather than going through third parties sometimes we do need them though - mainly contracts etc however these don’t seem too difficult once set up correctly either way its not really anything bad about their software itself although i would say some people might think otherwise due to previous experiences elsewhere.