Is there a way of switching my email? The email I registered is no longer in use meaning I can't verify my email.
You can switch the email if you still have access to the phone number attached to the Snapchat account. Access the form below and explain the issue to the developers. They will send a verification code to your phone number that can be used to gain access to the account. Then you can proceed safely to change the email to another one that you have access.
Support page: https://support.snapchat.com/en-US/co/password-reset