Step one: Determine your phone's email address. Your phone's SMS address is your 10-digit number followed by your carrier's SMS gateway. For example, to forward an email to a Verizon phone, enter 5555555555@vtext.com.You'll find a list of SMS gateways for dozens of phone services in the US and overseas on this Email Unlimited page.our phone's SMS address is your 10-digit number followed by your carrier's SMS gateway. For example, to forward an email to a Verizon phone, enter 5555555555@vtext.com.