-* selective download, delete messages on server
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- The selective download window lets you select messages, that
- should be retrieved from or deleted on the server.
- The selection can be automated by setting up a *global*
- filtering rule (folder based rules are ignored), e.g
- subject match "SPAM" delete_on_server
- Next time, you retrieve the headers using selective download,
- all messages that matched this criteria are marked.
- NOTE: Selective download is a pop3 only feature and makes
- no sense if used as a folder processing filter.
-