eSnips uses your email address as the unique identifier for your account. For that reason, and for your account's security, there is no option to change your email address in your account.
However, there are no limits as to the number of accounts a user can open, so that you can open a new account with a different email address. In order to move all your files from your first account to the new one, you must share your folders between the two accounts. You can do this by sending an invitation from folders in the new account to email address of the first one. After the folders have been shared between both accounts, simply move the files from your first account to your new one. You can also download all the files from your first account and upload them to the new account.
I've taken a vow of poverty. To annoy me send money.
Ian,you've got the patience of a Saint! I log in from time to time to see if any issues have been resolved(we all know E snips has gone tits up!) and your calm manner never ceases to amaze! Happy Xmas and good luck in 2009!