That FSF page is about criticizing "cloud computing" like Google Docs, which
they call Service As A Software Substitute. It's not a blanket condemnation
of getting your email from an email provider.
After all, the FSF also recommends KolabNow here (other than its webmail):
https://www.fsf.org/resources/webmail-systems
KolabNow offers similar services, like Collabra Online which it touts as a
webified LibreOffice, but I was referring only to KolabNow's email, contacts,
and calendar services.
As for being libre, they don't use that lingo, preferring "open source" which
shows their corporate rather than individual orientation, at least for their
pay services. But they do use the term "freedom" --
https://kolabnow.com/feature/freedom
If I were using a netbook with Trisquel Mini, or a Librebooted and
Trisquelized ASUS C201 Chromebook, I might still use SaaSS services like
KolabNow, or NextCloud with OnlyOffice, especially because the internal
storage capacity of that computer would be so limited.
