[Dovecot] Unique message IDs?

[Alexander Chekalin]

> Message GUIDs are pretty good for that.

Oh, thank you! Nice news!


> With Maildir the message GUID is typically the same as the Maildir base filename (i.e. everything before ':' character).

But what if I one day decide to convert my maildir's to mbox'es?
I really plan to do such conversion in a while (as soon as I finish the 
indexing system).

Yours,
   Alexander