Am 02.08.19 10:41 schrieb(en) Albrecht Dreß:
Yes, turning on libnetclient debugging, it appears that in my case filtering is implemented using the IMAP “SORT” extension (RFC 5256). No idea how balsa would deal with servers /not/ supporting it (I think I will temporarily disable detecting the SORT keyword and re-try).
To answer myself, in this case the messages are all loaded from the server, and filtering takes place locally. So please go ahead with your patch… Thanks, Albrecht.
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