Pillar 06
Device Linking
Open the same active MailOnce temporary inbox on another device through a short QR request and explicit approval.
Device linking is about continuity, not sharing. The QR code starts a request, the browser that already controls the inbox decides whether to approve it, and the second device joins the same short-lived inbox only after that decision.
15
Knowledge nodes
6
Languages
Eight device-linking topics and six existing pages form one connected graph without duplicate URLs.
Core device linking guides
Move one active inbox between your own devices
These guides explain the QR request, approval boundary, unexpected requests, phone-and-computer use and why linking is different from forwarding a message or OTP.
How to Open the Same Temporary Inbox on Another Device
Continue with the inbox already receiving your messages instead of creating a second address.
Read guideHow QR Device Linking Works in MailOnce
Follow the request from rotating QR code to browser approval and access on the second device.
Read guideWhy Does MailOnce Require Approval After Scanning the QR Code?
Understand why a scan starts a request but the existing session still controls permission.
Read guideIs QR Device Linking Safe?
See the security boundary of short-lived QR requests, explicit approval and recognized devices.
Read guideWhat Should You Do With an Unexpected Device-Link Request?
Refuse a request you did not initiate and keep control of the active inbox.
Read guideCan You Use the Same Temporary Inbox on Phone and Computer?
Use one active temporary inbox across desktop and mobile during the same short task.
Read guideDoes Linking Another Device Create a New Temporary Inbox?
Linking joins the existing inbox; it does not create a separate address or new mailbox.
Read guideDevice Linking vs Forwarding an Email or OTP Code
Compare staying inside one inbox with creating extra copies of a message or verification code.
Read guideConnected MailOnce device and verification guides
Existing feature and verification pages keep their original URLs and join this cluster through deliberate internal links.
Secure Device Linking
The full feature guide for rotating QR requests and browser approval.
Read guideExisting MailOnce guideOTP & Verification Detection
See how MailOnce surfaces OTP codes and verification actions inside the inbox.
Read guideExisting MailOnce guideTemporary Email for OTP
Use a temporary inbox for short verification flows without exposing your main address.
Read guideExisting MailOnce guideReal-Time Inbox Delivery
Understand how incoming messages reach and update the active inbox.
Read guideExisting MailOnce guideSafe Verification Links
Handle confirmation links more carefully when they arrive during a cross-device flow.
Read guideExisting MailOnce guideInbox Lifecycle
Remember that every linked device still follows the same temporary inbox lifetime.
Read guide