Sorry, I forgot that the “finally” statements after the successful “return” statement do get executed. At least one of our customers is now using our add-in with your sample code in and it works superbly! Thank you.

I have just reviewed the code: the sessionPtr, sessionObj and addrBookPtr variables are released, addrBookObj is returned by the GetAddrBook method. Could you please point me to the objects and pointers you mean?

I have just finished testing the code against Outlook 2007 in Offline mode, neither way worked offline. Please see the details on our forum:
http://www.add-in-express.com/forum/read.php?FID=11&TID=10180

The samples demonstrate two ways of retrieving SMTP-based email addresses. One of them does not use address book at all, it just gets the PR_SMTP_ADDRESS (aka PR_EMAIL) property from AddressEntry.

Please download the sources and pay attention to the CommandBarButtonPR_EmailAddress1_Click and CommandBarButtonPR_EmailAddress2_Click methods.

The problem with doing it this way (that I have found the hard way) is that if the user is offline and does not have an offline address book OR the Exchange address is an unpublished address/user then this will fail and cause Outlook to prompt the user with a “Check Names” dialog, asking the user to choose someone else, etc – rather than just resolve it using the PR_EMAIL field for the AddressEntry.

I suppose the MAPIInitialize function (which is used in the GetAddrBook method) returns an error. You can find the full description of the function in the following MSDN article:
http://msdn.microsoft.com/en-us/library/ms527051(EXCHG.10).aspx

Do you use our code in an Outlook COM add-in or in a standalone application? Did you make any changes in our code?

Thanks a lot. I have another small issue. I tried your code on Outlook 2007 and it says MAPI ca not be initialized when I try to use the GetAddrBook() function. Can you please tell me what could be wrong?

Pankaj

I think you can use the SenderEmailAddress and SenderEmailType properties:
http://msdn.microsoft.com/en-us/library/aa171942(v=office.11).aspx
http://msdn.microsoft.com/en-us/library/aa171944(v=office.11).aspx