I see that David Carter-Tod is having fun (sarcasm) reviewing mail servers for use with Conversant, and I had an idea.
If Macrobyte were willing to provide a mail hosting service tailored specifically for Conversant, on a monthly basis, would you be interested?
We'd set it up so that a given mail exchange, like sit.conv-mail.macrobyte.net (just a stupid example off the top of my head), has only a single account which your Conversnat server would use to download it's messages. All other mail sent to that mail host would forward to that one account.
This is the zero-maintenance approach to Conversant's email interface. When you create a new conversation, it would be automatically configured to use the mail host here (based on the information you provide at installation, or to the server admin system). You'd also have the option to use this same mail server for outgoing mail from Conversant, but that wouldn't be required (some ISP's don't allow you to use SMTP servers other than their own).
If you find this idea interesting, would you pay for it? Be honest with me... I don't see this as a big money maker, I'd just want to make enough to cover Macrobyte's expenses. Would you pay a $20 setup fee, and $5 or $10 per month?
There are other options, bu this is the one I like the best.