Any recommendations for another web-based mail program (free would be great ;p) for Plesk (Windows)? The one that comes with Plesk, Webmail, or Horde, is way too simplistic. Thanks for your comments.

I personally like SquirrelMail (or however you spell it). It's pretty nice, and out of Horde, and Neomail, I feel it's the best at the moment.

We use Linux, but I'll share my experiences anyways..

My admin couldn't [easily] integrate NeoMail or HiveMail into Plesk. SquirrelMail was relatively easy, and I believe Horde is as advanced or more so than it.

What are you looking for that Horde doesn't offer?

Thanks for replies guys, I'm looking at SquirrelMail right now. As to what Horde is lacking, I wanted multiple folders and folder management, as well as a better looking GUI. Horde works great and there's nothing wrong with it per se; it's just too plain looking and simple in function, in my opinion.

SquirrelMail isn't too good on the eyes either.

http://www.smartertools.com/Products/SmarterMail/Overview.aspx may be exactly what you want. It looks good, has features, and integrates with Plesk.

We use SmarterMail also - the clients love it and the new spam control features are great. You might check out pricing from ServerTastic (http://www.servertastic.com/store/product.asp?numRecordPosition=1&P_ID=125&strPageHistory=cat&strKeywords=&SearchFor=&PT_ID=71)