Unfortunately the one thing I seem to have not written down prior to having to hard reset my phone was my Yahoo email settings.

I had previously setup YM through Pop3 access. Which I seem to have recreated with the server settings. However, prior to this, it was setup (and I dont recall how) so that if I deleted a message on my phone and did a send/receive - that message would be deleted off the server. With the new setup it does not do this anymore and I cannot for the life of me find the option anywhere.

Can someone point me in the right direction?

Thanks.