Device Linking vs Forwarding an Email or OTP Code
Compare staying inside one inbox with creating extra copies of a message or verification code.
The useful distinction
Device linking keeps the message and OTP inside the same MailOnce inbox. Forwarding or sending yourself a code creates another copy or route outside that temporary inbox.
Fewer copies can mean a cleaner verification flow
When the only problem is that the code is needed on another device, linking can avoid forwarding the email or copying sensitive verification data into a second mailbox.
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.
Choose between shared access and another copy
Linking is useful when the goal is simply to see the same inbox on another owned device. Forwarding is a different choice: it sends the message or code through another route and creates another place where that verification data can exist.
The practical takeaway
Link when you need the same inbox on another device; forward only when you deliberately want another message route and understand the extra copy.
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