All BB email is push. "Working like a windows mobile device", as you put it above, refers to pull devices -- not push. BB's do not poll for email whether they're on BES or BIS.
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Originally Posted by fatso485
can you be a bit more spesific in the features that you will be losing.
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As dc/dc said, BIS only handles email. Anything else isn't.
Quote:
Originally Posted by fatso485
also does exchange over BIS support pushmail.
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Hmm, you are a bit confused. BIS is designed to interface with various email systems to retrieve and then push email to the BB. Exchange via BIS, whether access is via POP, IMAP or OWA isn't really push but once email hits BIS it's push from then on.