Having never done anything with email (except use it!), I'm out of my depth here. What I want to do is have a home email server that will work with Optus, Hotmail/outlook, Gmail and my website email. I want something that will do the sending and receiving, but will also keep all of the sent and received email synced across all the computers on my home network. What's got me wanting to do this is that I run a small business from home and currently use 3 different computers to check my business email (workshop, personal pc and a tablet. I'd like to add my phone in too. I've already got them set to leave the mail on the server so I get all the received/inbound stuff across the 3 machines, but not the sent/outbound replies and that's the problem. I'd also like it to be a solution that works out of the house as the tablet goes with me most places, but adding the phone means external access would be required. I've spent 1/2 an hour googling and all I ended up was confused.