The email retrieval function on my 3G iPhone works only sporatically. Yesterday, it worked like a champ, retrieving emails all day throughout the day. Today, no emails have been retrieved despite my having received over 20 on my laptop. I can't figure out the pattern of the problem. Both email accounts are POP accounts. A customer service guy at the ATT store looked at my settings and confirmed that they were correct. Are others experiencing this problem? Does anyone have an information on this issue?