Sup

Sup
is a powerful new mail client developed for people who manage lots of mail. It can be viewed as a cross between Mutt and Gmail, with very fast operation and search, tagging, automatic contact management, support for a wide variety of accounts at once, and more.
Installation
Automated
Install
sup
AUR
.
Manual
Sup can instead be installed via
RubyGems
with system Ruby, as follows:
Note
It is recommended to run all
gem install
commands as your user (not as root nor using sudo), for a per-user installation. See
Ruby#Configuration
.
If you have not used
gem
before, then you will first need to add
$(ruby -e 'puts Gem.user_dir')/bin
to your
PATH
environment variable. See
RubyGems
.
Install the dependencies:
base-devel
,
ruby
,
ruby-rake
, and
ruby-rdoc
.
Install
xapian-ruby
gem first, and then
sup
gem:
$ gem install xapian-ruby
$ gem install sup
Launch
sup
:
$ sup
Configuration
Sup comes with an easy to use configuration tool called
sup-config
. To use it, start it in the console and walk through the steps, which are as follows:
Enter your full name.
Enter your primary e-mail address, as well as any alternate e-mail addresses.
Enter the path to your signature file, if you have one.
Enter the editor that should be used to compose new mail, as well as any arguments that should be passed to it.
Add sources for your mail, including:
mbox files
maildir directories
Support for remote sources (POP3, IMAP, IMAPS, and mbox+ssh) was removed in the 0.12 release.
Sup is for the most part only an MUA (mail user agent) and cannot handle downloading mail on its own. You can use tools like offlineimap, fetchmail, and rsync to transfer email to the local system mbox or maildir folders.
The
sup wiki has an example
for configuring a gmail+imap source using offlineimap. The
Mutt#POP3
subsection shows some additional mail transfer methods.
After the email sources have been added,
sup-config
will execute the
sup-sync
command to import mail into your mailbox.
Filtering mail
sup works by having all relevant mail in one view at a time and no folders. To control exactly what is viewed and what is not mail needs filtering.
There are many ways to filter mail. Depending on how you access your mail you might want to filter on the serverside (with e.g.
imapfilter
AUR
or on the clientside.
To decide which way to go consider these two scenarios:
you always check mail on the same computer using sup -> go for local filtering
you want to be able to read your (uncluttered) email (through webmail) when using other computers -> filter on the server
Local filtering
The sup hook
before-add-message.rb
enables you with a little ruby knowledge to filter your mail and applying
labels
,
archive
,
mark read
etc. to mail easily.
Filter serverside
Sup only hides from view so to keep the serverside clean you have to resort to another tool.
imapfilter
AUR
is a popular mailfilter. Set it up starting from the
example.config
.
Tip
Some servers impose
quotas
and to keep within it you can use
archivemail
AUR
to clear the server from old mail.
sup sources
Sup uses the file
~/.sup/sources.yaml
to get sync your mail with its index and supports adding one or more labels to all mail from a source.
~/.sup/sources.yaml
--- 
- !supmua.org,2006-10-01/Redwood/Maildir 
  uri: maildir:/home/User/Mail/Inbox
  usual: true
  archived: false
  id: 1
  labels: []
- !supmua.org,2006-10-01/Redwood/Maildir 
  uri: maildir:/home/User/Mail/Pulse
  usual: true
  archived: true
  id: 2
  labels:
  - pulse
  - cruft
As seen in the example the
Pulse
folder has 2 labels:
pulse
and
cruft
. All the mail from Pulse is archived on import and hidden from view avoiding a cluttered screen. See the
sup wiki
for details on labels and ids.
Note
The source-statements need to have unique ids to work properly.
sup hooks
sup has to types of hooks: interactive and non-interactive to enable the user to easily customize the program. See details in the
sup wiki on hooks
for details.
before-poll hook
To activate the filtering and syncing automatically we set up a non-interactive startup hook using
before-poll
:
File: ~/.sup/hooks/before-poll.rb
 Executes immediately before a poll for new messages commences.
 No variables.
Here is a simple example (without filtering)
say "Running offlineimap..."
 system "offlineimap", "-o", "-u", "quiet"
Here is a simple example (with filtering)
say "Running imapfilter..."
 system "imapfilter", "-c", "path-to-config.lua"
 say "Running offlineimap..."
 system "offlineimap", "-o", "-u", "quiet"
Now running sup will start filtering and then synching mail when sup starts or whenever you poll mail manually. See details in the
sup wiki on before-poll
Viewing HTML attachments
create
~/.sup/hooks/mime-decode.rb
with
require 'shellwords'
   unless sibling_types.member? "text/plain"
     case content_type
     when "text/html"
       `/usr/bin/w3m -dump -T #{content_type} #{Shellwords.escape filename}`
     end
   end
Or
require 'shellwords'
    unless sibling_types.member? "text/plain"
      case content_type
      when "text/html"
	`/usr/bin/links -dump #{Shellwords.escape filename}`
      end
    end
Note the difference in program executed.
See details on
the sup wiki
Viewing non-text attachments
Note
Install
xdg-utils
to use
xdg-open
.
Create
the following hook:
~/.sup/hooks/mime-view.rb
# filename has already been shell-escaped
  pid = Process.spawn("xdg-open", filename,
                    :out => '/dev/null',
                    :err => '/dev/null')

  Process.detach pid

  true
See details on
the sup wiki
Usage
Execute the
sup
command to start the Sup mail client. The program should show the messages imported by
sup-config
.
The most important key for new users to remember is the
?
key. This will display a full list of keyboard commands at any point, reminding new users how to navigate the program.
To navigate between threads, use the arrow keys or the
j
and
k
keys (
Shift+j
and
Shift+k
work like the Page Up and Page Down keys). To jump between threads with new messages, press the Tab key. Sup does not load all threads by default; press
Shift+m
to load more (more messages will automatically load to fill the window).
To view a thread, select it and press the
Enter
key. To expand or collapse an individual message while viewing a thread, select the message and press the
Enter
key. Press
Shift+n
to expand only new messages (the default view) or
Shift+e
to toggle the state of all messages. Press
o
to show or hide hidden parts of a message (such as signatures).
To navigate between messages in a thread, press the
n
and
p
keys. To display the headers on a message, press the
h
key.
To cycle through buffers, press the
b
key, or press the
;
key to view a list of all of the open buffers. To kill a buffer, press the
x
key.
To archive a thread, press the
a
key. This will hide it from the inbox until someone replies to it, at which point it will reappear. To kill a thread, press the
&
key. This is equivalent to Gmail's "mute" function, which hides a message even if people reply to it. It will never re-appear in the inbox, but it will still show up in search results.
To star a thread, press the
*
key. To mark a thread as spam, press the
Shift+s
key. Sup does not have any built-in spam filter; for that, consider a program such as
spamassassin
.
To tag a thread, press the
t
key. To label the messages in a thread, press the
l
key. To search labels, press the
Shift+l
key.
Enter
a label for which to search or press the
Enter
key to call up a list of labels. To perform a full text search, press the
\
key.
To view a list of contacts, press the
Shift+c
key. To e-mail one of the people on the list, select their name and press the
Enter
key.
Back-up and Restore
Backing-up e-mail is very important. To ensure that you do not lose anything, first back up the sources, such as mbox files and maildir directories, then run:
$ sup-dump >
filename
This will back-up all message states in a text file. To restore your message states from this text file, simply run:
$ sup-sync [<source>+] --restored --restore
filename
Just remember that the commands above only back-up and restore message states. The messages themselves will need to be backed-up separately.
See also
Website
Wiki
README
FAQ
Philosophical statement