I've found it's very helpful for large IMAP folders.
---
lib/PublicInbox/LEI.pm | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index 50a7fdad..546fa773 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -353,6 +353,7 @@ my %OPTDESC = (
"or\xa0`-'\x{a0}for\x{a0}stdout)" ],
'mua=s' => [ 'CMD',
"MUA to run on --output Maildir or mbox (e.g.\xa0`mutt\xa0-f\xa0%f')" ],
+'new-only import' => 'only import new messages from IMAP source',
'inbox-version=i' => [ 'NUM|1|2',
'force a public-inbox version with --mirror'],
--
unsubscribe: one-click, see List-Unsubscribe header
archive: https://public-inbox.org/meta/
