Installed OS X 10:11 and Entourage will not work properly

I'm with you and would also pony up this cash. Its simple, Entourage is still my preferred mail client to this day. I'm sure anyone on this thread has very specific reasons why we continue to use Entourage despite it being 2016 - the common thread being we think its better than what is out there (Airmail, Postbox, certainly all Windows based clients, whatever). I'm tempted to downgrade from El Capitan just to get Exchange support back...I was extremely hesitant to upgrade to El Capitan, finally caved in and gave it a whirl, only to find it busts Entourage. Also, contrary to a previous post that says they got it working, I did a complete uninstall of Office 2008 and reinstall and still no dice (A complete uninstall does not mean simply deleting the apps, but going through and removing all remnants of Office 2008). Anyway, reverting back to IMAP for the time being. *sigh

Workaround:

I have a MacBook Pro 9,2 running El Capitan and WAS ABLE to get my emails from Entourage 2008.

What I did was install Thunderbird and the ImportExportTools extension (from this site: https://freeshell.de//~kaosmos/mboximport-en.html) and then I imported the .mbox files created by Entourage into Thunderbird. After this it is just a question of using Thunderbird or exporting these emails to another client. At least I could leave this piece of crap software (because of lousy support) MS Office for Mac 2008.

Quirks:

1) Do NOT USE Entourage´s "Export" feature ... it gives a lot of errors. I put the emails in a Inbox folder (called Backup) and dragged that folder to my Desktop.

2) There seems to be some kind of size limit for this operation, so I had to look at my emails and find the ones missing (it was always the NEWER ones) and do this process several times (I had some 12000 emails and it was needed 3 batches of some 4000 emails each). So I then made folders called Backup1, Backup2, Backup 3 in Entourage and dragged those to my Desktop.

3) When you import to Thunderbird you have to click some folder (even Inbox), because if you don't the Import .mbox feature will not be highlighted, after importing, the folder will show in your inbox ... but the emails won't ... you click the folder and it will process that folder (the wheel will spin), be patient, when it finishes the emails will be there.

Hope this helps someone.

PS: Seems the ImportExportTools is one of those extensions that will no longer work with future policy of Mozilla Extensions, and the developer doesn't seem to want to upgrade his code, so I can verify it worked with Thunderbird 38.6.0 for the time being.

Seems the size limit for me was exactly 2GB ... maybe some protection from MS for the 2GB limit RAM in 32bit boxes ... who knows?

I just upgraded to El Capitan (10.11.3) and Entourage works fine. I upgraded directly from Yosemite to the OS X 10.11.3 and everything in Office 2008 (including Entourage) worked immediately. Maybe El Capitan (10.11.3) worked out some of the "bugs" we had in 10.11.1?

-Jim

To be clear, Entourage works in El Capitan -- *unless you are using Exchange*. IMAP and POP functionality is unaffected. Can you confirm if you are using Exchange or IMAP/POP?

Am using IMAP/POP, but not Exchange.