Cox email speed

I recently signed up with Cox Contour and email service.  I am happy with Contour, but am Very unhappy with my email service.  I have talked to 8 technical people about how slow my email deletes and transfer files. No one has solved my problem   I did not cancel my centurylink account - it is fast and has given me no problems. A technician is coming out this week and if he/she cannot solve my problem I will cancel my cox email account a go back to centurylink.  Unfortunately the price I will have to pay is an increase in my Contour and phone fees because I will no longer have the bundle.  I just might get rid of Contour and go back to Direct TV