I can't say anything good about their marketing policy and behavior with customers, but it's definitely handy editor for making stuff paperless.
I understand bad reviews and complaints, but read the PRICING section before using it.
Maybe first it was designed as a tool for communication but today it's more like tool for talking with ads. And providing personal data to third parties is just terrible.
Probably it's time to start using messengers instead of public data collectors like socials.