Am 10.08.2012 10:46, schrieb Sergey S. Kovalev:
10.08.2012 15:16, Reindl Harald пишет:
i have a Android with K9, a lot of folders where messages are stored by sieve-scirpts and on my phone i can actively select which folders should be used for push
Sure, it can do it in two ways: open several connections to imap server (one per folder) or periodically change current directory and get changes.
typically the client opens a connecton for each folder to check
But any of this solution will eat battery very fast, proportionally to count of folders to check.
and that is why K9 on android let you select which folders are relevant for you on the mobile and which should be completly ignored and display the selected in "common inbox"
I think that battery life is the reason, why this feature is not implemented in iPhone. It will use only one IMAP connection
so it is not "it's IMAP limitation"
how does help me "save battery" if i have a folder-structure maintained by sieve if i do not get my new mails?
it's a limitation from Apple because they have not the knowledge to implement relieable mail-clients see below the removed posting on apple-support (first paragraphs german but posting and answer from Apple below in english)