To lower the friction for new users to take up Parley, it'd be handy to allow the "import" of an existing email account.

This has little security benefit, since the emails will exist on other servers already (although when I switch mail services, at least my mail will now be stored encrypted). But it would allow me to just use Parley, including for searching or categorising my old messages. I could then delete my current webmail account and there'd be one less insecure node in the system.

IMAP import would bring in old messages as well as category (label / folder) structure. Perhaps there's even a way to pull in Gmail / Thunnderbird / other message filter rules(?). It's all time saved by not having to set things up again.