Yes, it is possible to change your Gate.io email. To do that, you will need to submit a ticket to Gate.io. You can do this by visiting their Zendesk page at https://www.gate.io/zendesk. Once you are there, you will need to fill out the ticket form and provide the necessary information, such as your current email address and the new email address you wish to use. Once your ticket is submitted, Gate.io will review your request and take the necessary steps to update your email. Please note that this process may take some time, so be sure to be patient while waiting for a response.