7.5 Guess by From:

Mew also provides a mechanism to guess a folder by the place where a message that has the same From: field is refiled.

Suppose that Piglet has two addresses, piglet@example.org and p-p-p@example.org. Pooh wants to refile messages from Piglet to +from/piglet no matter what his From: is. This policy can, of course, be implemented if Pooh specifies rules explicitly as follows:

(setq mew-refile-guess-alist
  '(("From:"
      ("piglet@example.org" "+from/piglet")
      ("p-p-p@example.org"  "+from/piglet"))))

But such a work may bother you. So, first refile a message whose From: is piglet@example.org to +from/piglet. At this time, +from/piglet is created. Next, refile a message whose From: is p-p-p@example.org to +from/piglet. Here Mews learns that p-p-p@example.org was refiled to +from/piglet. After this, when messages whose From: is p-p-p@example.org are refiled, +from/piglet is chosen.

For another example, you can refile messages from machinery to +adm/misc without defining an explicit rule.

Information for relationship between From: and folder is stored to "~/Mail/.mew-refile-from-alist". ‘mew-lisp-max-length’ controls the amount of this information as the same as See section Guess by thread.

The function name to provide this feature is ‘mew-refile-guess-by-from’.

If the value of ‘mew-refile-guess-from-me-is-special’ is ‘t’, ‘mew-refile-guess-by-from’ acts as ‘mew-refile-guess-by-from-folder’ (See section Guess by private folders).

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