You both seem to be nice people that just rubbed each other the wrong way.I can tell you from personal experience that e-mails are not alway's reliable.I have not gotten some and some I never got or went to the spam folder only to find day's later.I alway's try to get someone's items mailed out the same day I get payment or the next day.Let's face it though,that isn't alway's possible with life's various reasons.It should be communicated though,and phone number exchanging isn't a bad idea.
It is best not to get bent out of shape or name call in a dispute,as it only makes matter's worse.I hate to see two members that have been around awhile get into an argument like this over a different carrier or a couple day late shipping.I know my UPS shipping counter has limited hours and are sometimes difficult to deal with certain items.Changing the terms of shipping should be discussed first,especially when someone requests a certain carrier,and you agree.
I like USPS myself,but some may have a problem with time of day deliveries.Usually they leave a slip and you can request holding at Post Office,where you can personally pick-up at your convience.
This whole thing is a shame,cause I'm sure it could have been resolved without getting to this point.Good Luck to you both.