Get a mail as a file on Linux

Would like to check certain mails daily with Shell script on Linux env. One way is to dump one mail satisfying certain conditions into a file and process it with shell commands, and then loop each mail. How to do that? Any gurus shed some light on it?
Thanks in advance.
jl66Asked:
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Daniel McAllisterPresident, IT4SOHO, LLCCommented:
Your solution is dependent upon the mail server software you use. Specifically, the way the mail software stores messages.

In general *nix systems store mail messages in 1 of 2 ways:
 mbox -- essentially one giant file with all mail message contents in that one file. Each Inbox or other "folder" is a separate file.
 maildir -- a directory heirarchy, so your folders are folders, and each message is an individual file. Message status is usually managed by manipulating the filename.

So, to begin to answer your question appropriately, we'll need to start with what mailbox type your server uses!

Dan
IT4SOHO
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Brian UtterbackPrinciple Software EngineerCommented:
Are the mails on a server or local on the file system?
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jl66Author Commented:
local.
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nemws1Database AdministratorCommented:
Have you used or heard of procmail?  You can set up a .forward file with procmail and based on rules either have an e-mail sent to your inbox or have it processed through a shell script.

This is even covered (briefly) in the procmail FAQ:
http://partmaps.org/era/procmail/mini-faq.html#rtfm
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jl66Author Commented:
Thanks for the tips. I figured out the way to do the script.
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