Kerio vs. Exchange for Entourage, Mac OS X, iPhone and Blackberry

Well we’ve narrowed down choices to two choices, two hosters against one of three desktop and two mobile clients. Here are the parameters:

Support for either of, in order:

* Mac OS X application. That is Mail, iCal and Address Book that are native to OS X and which is fast.
* Entourage 2004 or 2008 from Microsoft and typically free with any hoster. 2004 is slow as it is a non-native application while 2008 is new and definitely has sync issues.
* Outlook 2007 from Windows or via Parallels on the Mac. But Parallels on the Mac is very slow.

And to support both of:

* iPhone. We really mean the version 2 that will have ActiveSync
* Blackberry. Because folks have these but like the iPhone

So our choices technically are:

* Kerio. This is a Mac messaging, contact and calendaring backend
* Exchange

Here is how the matrix looks right now:

| | Kerio | Exchange | Comment |
| Mac Mail | Runs in Imap | Runs as imap | Both of these work fine |
| Address Book | Needs Kerio Sync to change contacts | Requires Entourage | |
| iCal | Use “Caldev”:http://www.kerio.com/manual/kmsug/en/ch11s05.html#sect-icalcaldavset on Leopard to allow delegation | Requires Entourage | |
| Entourage 2004 | Via OWA Emulation | Works | Not a native Intel app |
| Entourage 2008 | Need to Test | Need to test | Allows OOF setting |
| Outlook | Need to Test | Unacceptably Slow | |
| Windows | Need to Test | Works great | Assumes Outlook 2008 |
| Blackberry | Need to test | Works great | |
| iPhone | “v2”:http://forums.kerio.com/index.php?t=msg&th=13051&start=0&S=271491edc283c6f0ec2b666277b0b83e should work | wait for v2 | Kerio looks like Exchange so should work with iPhone v2! |

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