How to Prevent Duplicate Blackberry Emails
Question: I keep getting duplicate emails on my Blackberry Curve 8310, and it seems to be only messages that I reply to (where the original message will show up again after I reply to it, even if it was received several weeks ago). Is there a way to turn this off?
Answer: The trick for turning off duplicate emails was to switch the account type to use my company's outlook web mail address instead of integrating directly with the exchange server.
Basically I logged into the Blackberry email account setup screen and deleted my existing email account, and then created a new one that used the same web address that I use when I log into Outlook with the web client.
The devil is in the details however, and here are the tricks I used to create a blackberry email account that used my company's outlook web address instead of exchange.
First, I logged into the blackberry internet service page (http://att.blackberry.com for me since I'm with AT&T), and then deleted the account that I had set up.
Next, I created a new account using firstname.lastname@example.org (or some bogus email address that the service won't be able to find. This is necessary because it won't show you the super advanced account configuration options unless it can't connect to your mail server, so this fakes it out).
It'll search for a while and then will prompt you for additional information about your account (exactly what we want). Check the option to provide your own email account settings, and then click Next.
It's a work email account:
Check the option to access your email account using a web browser:
And then add your outlook web access info:
That did the trick for me.