Does Linking Another Device Create a New Temporary Inbox?
Linking joins the existing inbox; it does not create a separate address or new mailbox.
Quick answer
No. Linking another device joins the inbox you already have; it does not generate a new temporary address or a separate message history.
Linking is access, not creation
A new inbox would split the workflow and receive messages at a different address. Device linking instead keeps both approved devices focused on the same active address.
Device linking keeps the task inside one active MailOnce inbox. The QR code is only a short request mechanism; access still depends on approval from the browser that already controls the inbox.
Access changes; the mailbox does not
The linked device joins the existing address and message stream. If a second inbox were created, messages sent to the first address would stay there and the verification flow would split. Linking is designed to avoid that split.
What linking changes — and what it does not
One address, one inbox, another approved device. Linking does not create a second mailbox.
Try MailOnce
Move one active inbox between your own devices
Create a temporary inbox, then link another device only when your task genuinely moves from one screen to another.
Create temporary emailRelated device linking guides
Continue with the device-linking topics closest to what you just read.
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 guide