Another pre-release from the 1.3.10, leading up to 1.4.

See NEWS.org (or N in the main view) for the all the details.

1.2

After a bit over a year since version 1.0, here is version 1.2. This is
mostly a bugfix release, but there are also a number of new features.

mu

- Substantial (algorithmic) speed-up of message-threading; this also (or
  especially) affects mu4e, since threading is the default. See commit
  eb9bfbb1ca3c for all the details, and thanks to Nicolas Avrutin.

- The query-parser now generates better queries for wildcard searches, by
  using the Xapian machinery for that (when available) rather than
  tranforming into regexp queries.

- The perl backend is hardly used and will be removed; for now we just
  disable it in the build.

- Allow outputing messages in json format, closely following the sexp
  output. This adds an (optional) dependency on the Json-Glib library.

mu4e

- Bump the minimal required emacs version to 24.4. This was already de-facto
  true, now it is enforced.

- In mu4e-bookmarks, allow the `:query` element to take a function (or
  lambda) to dynamically generate the query string.

- There is a new message-view for mu4e, based on the Gnus' article-view.
  This bring a lot of (but not all) of the very rich Gnus article-mode
  feature-set to mu4e, such as S/MIME-support, syntax-highlighting,

  For now this is experimental ("tech preview"), but might replace the
  current message-view in a future release. Enable it with:
           (setq mu4e-view-use-gnus t)

  Thanks to Christophe Troestler for his work on fixing various encoding
  issues.

- Many bug fixes

guile

- Now requires guile 2.2.

Contributors for this release:

Ævar Arnfjörð Bjarmason, Albert Krewinkel, Alberto Luaces, Alex Bennée, Alex
Branham, Alex Murray, Cheong Yiu Fung, Chris Nixon, Christian Egli,
Christophe Troestler, Dirk-Jan C. Binnema, Eric Danan, Evan Klitzke, Ian
Kelling, ibizaman, James P. Ascher, John Whitbeck, Junyeong Jeong, Kevin
Foley, Marcelo Henrique Cerri, Nicolas Avrutin, Oleh Krehel, Peter W. V.
Tran-Jørgensen, Piotr Oleskiewicz, Sebastian Miele, Ulrich Ölmann

After a decade of development, mu 1.0!

mu

- New, custom query parser which replaces Xapian's 'QueryParser'
  both in mu and mu4e. Existing queries should still work, but the
  new engine handles non-alphanumeric queries much better.
- Support regular expressions in queries (with the new query engine),
  e.g. "subject:/foo.*bar/".  See the new `mu-query` and updated
  `mu-easy` manpages for examples.
- cfind: ensure nicks are unique
- auxiliary programs invoked from mu/mu4e survive terminating the
  shell / emacs

mu4e

- Allow for rewriting message bodies
- Toggle-menus for header settings
- electric-quote-(local-)mode work when composing emails
- Respect format=flowed and delsp=yes for viewing plain-text
  messages
- Added new mu4e-split-view mode: single-window
- Add menu item for `untrash'.p
- Unbreak abbrevs in mu4e-compose-mode
- Allow forwarding messages as attachments
  (`mu4e-compose-forward-as-attachment')
- Default to 'skip duplicates' and 'include headers' in
  headers-view, which should be good defaults for most users. Can
  be customized using `mu4e-headers-skip-duplicates' and
  `mu4e-headers-include-related', respectively.
- Many bug fixed (see github for all the details).
- Updated documentation

Contributors for this release:

Ævar Arnfjörð Bjarmason, Alex Bennée, Arne Köhn, Christophe
Troestler, Damien Garaud, Dirk-Jan C. Binnema, galaunay, Hong Xu,
Ian Kelling, John Whitbeck, Josiah Schwab, Jun Hao, Krzysztof
Jurewicz, maxime, Mekeor Melire, Nathaniel Nicandro, Ronald Evers,
Sean 'Shaleh' Perry, Sébastien Le Callonnec, Stig Brautaset,
Thierry Volpiatto, Titus von der Malsburg, Vladimir Sedach, Wataru
Ashihara, Yuri D'Elia.

And all the people on the mailing-list and in github, with bug
reports, questions and suggestions.

Another pre-release for the upcoming 1.0

Note, the pre-configured tarball(mu-1.0-alpha0.tar.xz) below is recommended, so you can do the familiar ./configure && make.

mu

• Increase the default maximum size for messages to index to 500
  Mb; you can customize this using the --max-msg-size parameter to
  mu index.
• implement "lazy-checking", which makes mu not descend into
  subdirectories when the directory-timestamp is up to date;
  greatly speeds up indexing (see --lazy-check)
• prefer gpg2 for crypto
• fix a crash when running on OpenBSD
• fix --clear-links (broken filenames)

mu4e

reading messages

• Add mu4e-action-view-with-xwidget, and action for viewing
  e-mails inside a Webkit-widget inside emacs (requires emacs 25.x
  with xwidget/webkit/gtk3 support)
• Explicitly specify utf8 for external html viewing, so browsers
  can handle it correctly.
• Make `shr' the default renderer for rich-text emails (when
  available)
• Add a :user-agent field to the message-sexp (in mu4e-view), which
  is either the User-Agent or X-Mailer field, when present.

composing messages

• Cleanly handle early exits from message composition as well as
  while composing.
• Allow for resending existing messages, possibly editing them. M-x
  mu4e-compose-resend, or use the menu; no shortcut.
• Better handle the closing of separate compose frames
• Improved font-locking for the compose buffers, and more extensive
  checks for cited parts.
• automatically sign/encrypt replies to signed/encrypted messages
  (subject to `mu4e-compose-crypto-reply-policy')

searching & marking

• Add a hook mu4e-mark-execute-pre-hook, which is run just before
  executing marks.
• Just before executing any search, a hook-function
  mu4e-headers-search-hook is invoked, which receives the
  search expression as its parameter.
• In addition, there's a mu4e-headers-search-bookmark-hook which
  gets called when searches get invoked as a bookmark (note that
  mu4e-headers-search-hook will also be called just
  afterwards). This hook also receives the search expression as its
  parameter.
• Remove the 'z' keybinding for leaving the headers
  view. Keybindings are precious!
• Fix parentheses/precedence in narrowing search terms

indexing

• Allow for indexing in the background; see
  mu4e-index-update-in-background.
• Better handle mbsync output in the update buffer
• Add variables mu4e-index-cleanup and mu4e-index-lazy to enable
  lazy checking from mu4e; you can sit from mu4e using something
  like:

(setq
  mu4e-index-cleanup nil      ;; don't do a full cleanup check
  mu4e-index-lazy-check t)    ;; don't consider up-to-date dirs

misc

• don't overwrite global-mode-string, append to it.
• Make org-links (and more general, all users of
  mu4e-view-message-with-message-id) use a headers buffer, then
  view the message. This way, those linked message are just like
  any other, and can be deleted, moved etc.
• Support org-mode 9.x
• Improve file-name escaping, and make it support non-ascii filenames
• Attempt to jump to the same messages after a re-search update operation
• Add action for spam-filter options
• Let `mu4e~read-char-choice' become case-insensitive if there is
  no exact match; small convenience that affects most the
  single-char option-reading in mu4e.

Perl

• an experimental Perl binding ("mup") is available now. See
  perl/README.md for details.

Contributors:

Aaron LI, Abdo Roig-Maranges, Ævar Arnfjörð Bjarmason, Alex Bennée, Allen, Anders Johansson, Antoine Levitt, Arthur Lee, attila, Charles-H. Schulz, Christophe Troestler, Chunyang Xu, Dirk-Jan C. Binnema, Jakub Sitnicki, Josiah Schwab, jsrjenkins, Jun Hao, Klaus Holst, Lukas Fürmetz, Magnus Therning, Maximilian Matthe, Nicolas Richard, Piotr Trojanek, Prashant Sachdeva, Remco van 't Veer, Stephen Eglen, Stig Brautaset, Thierry Volpiatto, Thomas Moulia, Titus von der Malsburg, Yuri D'Elia

Getting the package

Download the official tarball.

Note, the below files are not complete releases, and require a full autotools setup. So, better pick the official one!

Pre-release for the upcoming 0.9.18
mu-0.9.17.tar.gz