neomutt ってものがあるのか
ちょっと試してみよう

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$ apt show neomutt
Package: neomutt
Version: 20180716+dfsg.1-1
Priority: optional
Section: mail
Maintainer: Mutt maintainers <neomutt@packages.debian.org>
Installed-Size: 7,126 kB
Provides: imap-client, mail-reader
Depends: libc6 (>= 2.15), libcom-err2 (>= 1.01), libgnutls30 (>= 3.5.6), libgpgme11 (>= 1.8.0), libgssapi-krb5-2 (>= 1.14+dfsg), libidn11 (>= 1.13), libk5crypto3 (>= 1.6.dfsg.2), libkrb5-3 (>= 1.6.dfsg.2), liblua5.3-0, libncursesw6 (>= 6), libnotmuch5 (>= 0.26~rc0), libsasl2-2, libtinfo6 (>= 6), libtokyocabinet9 (>= 1.4.47)
Recommends: locales, mime-support, libsasl2-modules
Suggests: default-mta | mail-transport-agent, urlview, aspell | ispell, gnupg, mixmaster, openssl, ca-certificates
Homepage: http://www.neomutt.org/
Tag: uitoolkit::ncurses
Download-Size: 1,486 kB
APT-Sources: http://ftp.jp.debian.org/debian sid/main amd64 Packages
Description: command line mail reader based on Mutt, with added features
Neomutt supports all the features that are supported by Mutt, including POP and
IMAP support, SSL encryption and SASL authentication, threading and GPG
support.
On the top of that, neomutt provides:
* Notmuch: a mail indexing tools that provides advanced features such as
full-text search, thread reconstruction and added features.
* Color attachment headers using regex, just like mail bodies.
* Custom rules for theming the mail index.
* NNTP support.
* Visual progress bar for slow operations.
* Trash folder.