Possibility of using labels with Fastmail account?

I’m a Fastmail user and am trying Mailspring in OSX. Fastmail enables organizing ones emails via both folders and labels; it is possible to switch back and forth from one to the other. The nice thing about labels, of course, is that a given email can be assigned multiple labels whereas only one folder can be assigned per email.

I understand that Mailspring supports labels when connecting to Gmail accounts. Do I surmise correctly that there is no way for me to configure Mailspring to use labels with my Fastmail account and that I’m therefore stuck using folders?