new web host, need to change email settings

new web host, need to change email settings

Hi,

I am sure this is stright forward but i am struggling - i have recently moved my web hosting from one site to another (from hostpapa to justgreatsites).  As a result my zoho emails need re configuring.   could some please help me or point me in the right direction of how to do this.  I would really like to keep the old emails also if possible.  

Thanks,

Jesse