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在 Emacs 中用 mu4e 和 offlineimap 查看 O365 Exchange 邮件

31 March 2019

为了能在 Emacs 中收发邮件，来来回回折腾了不少时间。终于搞定了。现将配置过程梳理如下。

1 检查系统环境

1.1 软件版本

  1. macOS 10.14.3 (18D109)
  2. GNU Emacs 26.1 (build 1, x86_64-apple-darwin14.5.0, NS appkit-1348.17 Version 10.10.5 (Build 14F2511)) of 2018-05-31
  3. mu (mail indexer/searcher) version 1.0
  4. offlineimap v7.2.1, imaplib2 v2.57 (bundled), Python v2.7.10, LibreSSL 2.2.7

1.2 邮件系统

世纪互联运营的 Office 365

  • 服务器名称: partner.outlook.cn
  • 端口: 993
  • 加密方法: TLS

2 安装 mu 和 offlineimap

安装 mu： 

brew install mu

安装 offlineimap 

brew install offlineimap

3 配置 offlineimap

在 HOME path 下创建 .offlineimaprc, 内容如下： 

[general]
accounts = outlook
maxsyncaccounts = 3
pythonfile = ~/.offlineimap.py

[Account outlook]
localrepository = outlook-Local
remoterepository = outlook-Remote
utf8foldernames = True

[Repository outlook-Local]
type = Maildir
localfolders = ~/.mail/outlook

[Repository outlook-Remote]
type = IMAP
remotehost = imap.partner.outlook.cn
remoteuser = <your mail address>
remotepass = <your password>
ssl = true
sslcacertfile = /etc/ssl/cert.pem
maxconnections = 4
realdelete = yes

我看到网上不少文章说 offlineimap 不支持中文，但是查看 offlineimap 代码发现有 utf8foldernames 选项，设置成 True 即可支持 utf-8 了。因此也不需要 decode imap4-utf-7 了。

4 同步邮件

执行以下命令： 

offlineimap

运行结果如下： 

kimi.im:~$ offlineimap
OfflineIMAP 7.2.1
  Licensed under the GNU GPL v2 or any later version (with an OpenSSL exception)
imaplib2 v2.57 (bundled), Python v2.7.10, LibreSSL 2.2.7
Account sync outlook:
 *** Processing account outlook
 Establishing connection to imap.partner.outlook.cn:993 (outlook-Remote)
......
Account sync outlook:
 *** Finished account 'outlook' in 5:11

5 用 mu 索引邮件

执行命令： 

mu index -m ~/.mail

运行结果如下： 

kimi.im:~$ mu index -m ~/.mail
indexing messages under /Users/kimim/.mail [/Users/kimim/.mu/xapian]
/ processing mail; processed: 15750; updated/new: 0, cleaned-up: 0
cleaning up messages [/Users/kimim/.mu/xapian]
| processing mail; processed: 15814; updated/new: 0, cleaned-up: 0
elapsed: 0 second(s)
/ processing mail; processed: 15814; updated/new: 0, cleaned-up: 0
elapsed: 0 second(s)

6 配置 mu4e

在 Emacs 中增加 elisp 

(when (eq system-type 'darwin)
  (add-to-list 'load-path "/usr/local/Cellar/mu/1.0_1/share/emacs/site-lisp/mu/mu4e"))

(require 'mu4e)
(setq mail-user-agent 'mu4e-user-agent)
(setq mu4e-maildir "~/.mail")
(setq mu4e-get-mail-command "offlineimap -u quiet")
(setq mu4e-update-interval 60)

(setq mu4e-sent-folder   "/outlook/Sent Messages")
(setq mu4e-drafts-folder "/outlook/Drafts")
(setq mu4e-trash-folder  "/outlook/Deleted Messages")
(setq mu4e-refile-folder  "/outlook/Archive")

(setq mu4e-view-show-images t)

7 大功告成

然后在 Emacs 中 M-x mu4e 即可查阅邮件了。