This tap contains the mutt 1.5.24 formula with updated versions of patches no longer included in the official homebrew repository (currently only the trash_folder patch).
brew tap x-way/mutt and then
brew install x-way/mutt/mutt.
You can also install via URL:
brew install https://raw.githubusercontent.com/x-way/homebrew-mutt/master/Formula/mutt.rb
First, please run
brew update and
Second, read the Troubleshooting Checklist.
If you don’t read these it will take far longer to help you with your problem.
man brew or check the documentation.
Code is under the BSD 2 Clause (NetBSD) license.