Push email is possible in bb without bis and bes.
But with few limitations.
Maximum size of each incoming email that can be downloaded is 99KB.
But there is no limit in outgoing email size.
The software that enables this feature is “shangmail.”.
The below link opens shangmail web page. Download the correct Version and create an account. In the account add your imap or pop enabled email I’d,pass word etc.
The above link takes you to shangmail website where you can download the correct version for your bb device..
Enjoy push email.
There is one slight problem.—as the shangmail server is in china or some far country ,your mails will be saved to china server and pushed to your email. So there will be a average of 30 minutes delay for the email to reach your bb.
Posted with WordPress for BlackBerry.