When both an SMS verification code and access to the registered email are unavailable, standard automated resets will not work. Your remaining avenue runs directly through the official Snapchat Support portal (accessible via browser at support.snapchat.com).
Navigate to the "Contact Us" sub-section and select the option stating you cannot access your account. Choose the specific issue: "I can't verify my email or mobile number." The system presents a detailed ticket form requiring your precise username, current working email address, registered mobile number, and an extensive description field.
Success during manual review hinges entirely on provable account lineage. Support agents evaluate historical telemetry, including past login geolocations, prior linked phone numbers, original registration timestamps, and device hardware profiles previously linked to the profile. If you cannot provide enough identifying data points matching the historical log, automated privacy filters will reject the petition. This prevents hostile actors from socially engineering support staff to hijack high-value handles.