I have gone one step further and started a an email provider. Hosted in Frankfurt, backup in Amsterdam.
Custom domain Webmail, IMAP, pop, all with TLS obviously Calendar, tasks, contacts sync all in one, all Foss solutions. Anti spam, anti virus
Haven't figured out how to sell that yet, or at what price, but I'm working on that. XD
Im guessing indexing. You don't know enough of the context of the memories to create a good association and a complete reconstruction of the memory. So there is some very simple recall for hyper detailed things like the structure on my parents first couch. But nothing more complete.