[brongondwana]

You can use IMAP to access Fastmail without running Javascript (or I guess your own JMAP client if you wanted to write one - there isn't one that doesn't use Javascript yet) - but no, you can't use our interface without running Javascript - the client is written entirely in Javascript.

[oil25]

That's too bad, looks like I'll have to stick with GSuite Gmail to have browser-based, non-Javascript access to my email.