Hello all. As the subject line implies, I'm rather new to Bongo. Last January I discovered Citadel in my quest for a better email solution, and while I'm mostly happy with it, there are aspects that bug me as well. Bongo looks interesting, but there's no features page that I've found, so I'm not sure how to get these questions answered other than posting here. Feel free to point me to one if I've missed it.
1. Does Bongo support multiple domains and multiple email addresses? Can I have one address at my primary domain and another at my business domain, all under the same account? My primary address might be
nolan@thewordnerd.info, while my secondary might be
me@mydbaname.com.
2. I think I saw that Bongo supports archiving. This is great. Much of my use will be from desktop IMAP clients, though, specifically Thunderbird3. Is Bongo's archiving scheme compatible with TB? That is, TB moves archived mail into Archives.year-month IMAP folders. It'd be great if those two were compatible. It'd be even better if there was some way to have all deleted mail archived automatically like Gmail, only the behavior would be there regardless of client, but that may be getting ahead of myself.

3. Does the IMAP server support IMAP idle? That's a Dovecot feature I dearly miss in Citadel, and since I'm planning on migrating to a mobile email client that supports this functionality, it'd be great to have.
4. What about server-side mail filtering via Sieve? My main use case right now is separating all mailing lists into one folder so they don't end up in my inbox, and doing the same for spam. I could do without this but would eventually miss it.
5. Does the calendar support tasks? This is something I'm playing with in Citadel, so not a huge need, but it exists.
6. Is there any work being done on sync? Currently I have a system working between Citadel and my phone, but it requires a separate Funambol server, which is fairly heavy, and I don't think that project has seen work in 5 months or so. Google searches reveal some talk on this back in 2007. Has anything happened since? This is a fairly important one for me, since rarely are contacts and calendars useful in a vacuum.
7. How difficult is it to migrate existing mail? Citadel has a number of protocols available for accessing the underlying datastore, plus an XML format. Would be nice to bring all my existing messages over if possible.
Thanks for the answers!