Here's a list of all mutt-ng specific TODOs: We need to modify the build scripts and paths in the source so that mutt-ng doesn't conflict in any way with mutt. We need to do a security audit. At least remove all the unsafe function calls, even when they're marked with "secure" or "checked", and replace it with secure alternatives instead. Remove all the multibyte-character handling stuff. It only makes the source code complicated, and doesn't add any special functionality - no, in one case, it already caused lots of problems. Update the ChangeLog file or create a new ChangeLog.mutt-ng file. Incorporate a lot more patches that are floating around in the web. Investigate why build w/ the following cmdline fails: ./configure (or ./configure --with-regex --enable-imap --with-ssl=/usr/local/ssl -enable-buffy-size --with-exec-shell=/bin/zsh --enable-hcache --with-idn=/usr/local/lib/ ?)