After much faff moving stuff from gmail, verdict: new provider seems fine if you're going to use it exclusively through IMAP, but webmail is basically only for emergencies (and sanity-checking IMAP while setting it up).
Kinda flaky, kinda slow, kinda short on customization options that I thought were standard. Three options only, see below. obligatory light-grey-on-lighter-grey-with-copious-dead-space.
Good it's not Google; worse in every other respect.
