[ale] Why Run your own email server?

[DJ-Pfulio]

On 09/30/2016 10:48 AM, James Taylor wrote:
> I've got "exchange" type features....
> calendar and addressbook sync, busy search, mobile access, linux, mac and and windows support.
> I don't need crm integration,  but it can be available if I did. 
>  I'm not sacrificing anything by hosting my own.
> Works for me, may not work for everyone. 

What do you use for calendar and addressbooks?