[BNM] - Legal/copyright question

[Max Williams]

Legal question:  If i'd created 'a digital thing' and wanted to protect
myself against someone else claiming it as their idea, would it be
sufficient for me to send that thing to myself via gmail?  So that, if it
came to it, later on i could point to the email? (and if required claim that
google could verify it by checking their own mail records?)

thanks
max