I would like to be able to add multiple accounts to the same. Now I know you can link accounts, but what i really want is to be able to send and receive emails via one mailbox (so I might receive an email to one of my addresses but I want to send a response with another.)

I have my domain hosted with domains.live.com, but I cannot work out how to add a new send/receive account to my mailbox. I tried adding it with the pop of pop3.live.com but then it tells me I need to link the accounts, which I don't mind, but I want to be able to consolidate my mailbox.
Can you create groups of contacts so an email will go to all of them without choosing each individual separately?
when I compose an email in my Hotmail account the font defaults to size 8 Calibri which is very small. How to I change the font size permanently to Arial 12 rather then having to change it every time I compose an email?
I'd be very grateful if someone could please tell me how I could perhaps use TimeLine to recover an Outlook email folder that I accidentally deleted
Hello , Today I used a friends computer to access my email account ,  now tonight I find that ALL their contact addresses are added to my contact list ?? 
I'm using windows live mail. I have an email account with local provider as primary, plus have hotmail and gmail. I tried the new outlook and didn't like it, so switched back to windows live mail. Now all my local provider emails also show up in my hotmail account. How do I stop this?
I moved an email from deleted folder to inbox using my phone but when went to inbox, the message was not in the inbox and it's not in the deleted folder either. Is there a way to recover that email?
I received the following email I showing Microsoft's address talking about Virus Notification is this a real email or spam?