[Dovecot] No duplicates on imap copy?

[Timo Sirainen]

On 22.11.2011, at 11.10, Alexander Chekalin wrote:

> when from my script I try to copy messages from one imap folder into another own (within the same imap mailbox). That works perfectly, but... If I copy the same message N times from one folder into another one, in the destination folder I see N copies of the same message, each with its own UID.

Right.

> I wonder if there any way to deduplicate folder content (so in the destination folder I'll get only one copy of each message)?

Not any easy way currently.

> I'd implement something like that myself in my script but I just don't know which part of the messages should I compare - probably md5 of headers?

What Dovecot version and what mailbox format?