I set up my home (Desktop based - via Windows Mail/Vista O/s) email account on my Windows Phone 8. Did that so as to read my emails when absent from home - eg at bach, on holiday in NZ or overseas etc.
Seemed to work OK using some tests whilst still at home. Used home based wireless modem to connect phone and check for emails.
Thus, whilst I was able to read any emails on the phone via the account I have set up I was also able to (later) download those same emails onto my PC via Windows Mail and read/deal with them (eg reply or forward). Now that is the way I thought the set up (on my phone) would work, by default, and that my emails would not be removed from the server until and/or unless I brought them into my PC based email account. There was no option on my phone setup to take the emails off the server (or otherwise) when checking them on my phone.

Last couple of days have been at bach. Checked emails whilst there. Those on hand were shown on phone and I have read them Did not read all of the emails. On return home I checked home PC for emails. I expected to see those I had seen on my phone - both opened and read and those not even opened. However - check of home PC (via Windows Mail) revealed no emails on hand (clicked "Send/Receive"). Funny thing I thought. So, back to my phone - where (I thought) the emails resided (as they did not appear on my PC). I guessed that the emails had been taken off the server (onto my phone) and that I needed to forward them on to myself so as to get them onto my PC. Odd thing though - the emails that I had read and seen on my phone were no longer there!!

What has happened here. I don't think things should have happened this way.

Has anyone any ideas? Am I correct that the default set up on my phone should not remove the emails from the server. Is there a "tick box" I have missed in my (phone) email account set up?

I'm mystified re this. 

Any help will be appreciated.