Sending email while traveling in Europe

The worst think about this is that from my experience, the Cox SMTP server DOES NOT SEND ANY REJECTION MESSAGE, it simply accepts the mail as sent from your device, and then discards it, never sending it to your intended recipient.  If this was a response to an important message, you look like an idiot because you will never have been responded.  If you were sending an important message, you will never get a response (because it was never sent).  

I had to switch my SMTP to gmail since I travel often and this was a disaster.    (It has a minor drawback in that I couldn't figure out how to suppress recipients seeing my gmail address and sometimes thinking that is my primary address.)