Open WebMail is a webmail system designed to manage very large mail folder 
files in a memory efficient way. It also provides a range of features to 
help users migrate smoothly from Microsoft Outlook to Open WebMail.

FEATURES:
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1.  fast folder access
2.  efficient messages movement
3.  smaller memory footprint
4.  convenient folder and message operation
5.  graceful filelock
6.  remote SMTP relaying
7.  virtual hosting and account alias
8.  pam support
9.  per user capability configuration
10. full content search
11. strong MIME message capability
12. draft folder support
13. spelling check support
14. POP3 mail support
15. mail filter support
16. message count preview
17. confirm reading support
18. BIG5/GB conversion (for Chinese only)