Ask HN: Do you have a personal email archiving solution?

I've sorely regretted not having an email archiving solution for my personal inboxes. I've been fired from jobs, closed down startups, or graduated from school, and then regretted not being able to reference old emails in those inboxes.

Ease-of-use is paramount. Before I build a quick "bcc-to-ElasticSearch" tool myself, I'd like to know if anyone knows of a self-hosted tool for personal email archive. Fast search would be a huge plus.