14.1.1 The conversion of msgdb

From version 2.12.0 on, the structure of msgdb is changed. The msgdb for newly created folder will use this new format when created and saved. But by writing following line, you may use the old format of the msgdb as it was.

(setq elmo-msgdb-default-type 'legacy)

With the default setup, the old msgdb format is converted to the new format automatically. You may change this behavior by writing following lines in `~/.wl'.

;; If the format of msgdb is different from elmo-msgdb-default-type,
;; the format will be converted automatically when
;; the msgdb is being loaded (default).
(setq elmo-msgdb-convert-type 'auto)

;; Convert msgdb when hitting s all in Summary mode
(setq elmo-msgdb-convert-type 'sync)

;; Inhibit conversion
(setq elmo-msgdb-convert-type nil)

As is explained in above section, you may continue to use the old format. But you will have following limitations.

1. You cannot use forwarded mark (`F', `f').
2. You may only use `important' flag. The other global flags may not be available.