I can't believe I've been looking for a solution for this for more than seven years.
I believe there is a way in Thunderbird to sort and export a list of (i) your most frequently emailed address, and (ii) the emails that you have most frequently received emails from. I would like to understand this data, because I suspect it would help me create a valued list of most frequent contacts for purposes of business development, primarily.
Has anyone done this either through Thunderbird, or otherwise? Any suggestions? I would like something that I can run locally and doesn't require me to upload my emails to a third party, for privacy and security reasons.