w3guy we log all incoming and outgoing mail activity, but since the logs are system-wide we can't give you access to them. If you have a specific concern about a particular message then please email our support team with the details so that we can look into it. We'll need to know the sender address, recipient address, and the date and time (with time zone) that the message was sent.
Regarding resending failed attempts, the mail server handles that automatically.