Would kind of also ruin the offline support.
I couldn't care less about KMail's offline support. I run offlineimap, which works a lot better for me, anyway.
[ ] but then why remove the caching and offline capability if all you want is to use a different DB engine?
I'd prefer not to have to run a DB engine for the exclusive benefit of my mail program at all, thank you very much. I've been using KMail for years and years without the added complication of a »DB engine«, and I can frankly see no benefit whatever in the added complication. Show me one compelling reason why I would even want to run a complete MySQL or PostgreSQL server just to power my mail reader and I might reconsider. I can tell you right off the bat that caching and offline support are not compelling reasons.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds