NOV data

An article identified by uniq has its NOV data (used to generate lines in the summary buffer) stored in .nnmaildir/nov/uniq. There is no nnmaildir-generate-nov-databases function. (There isn’t much need for it—an article’s NOV data is updated automatically when the article or nnmail-extra-headers has changed.) You can force nnmaildir to regenerate the NOV data for a single article simply by deleting the corresponding NOV file, but beware: this will also cause nnmaildir to assign a new article number for this article, which may cause trouble with seen marks, the Agent, and the cache.