How MailOnce Real-Time Inbox Delivery Works
Understand what real-time delivery means after an email reaches MailOnce.
What real time actually covers
MailOnce is built to surface newly received messages in the active inbox without requiring a manual reload. Real-time delivery describes what happens after MailOnce receives the email; it cannot make an external website send earlier.
Real time starts when MailOnce receives the message
There are two different delays in one user experience: how long the sender takes to deliver the email, and how quickly MailOnce shows an email it has already received.
Real-time inbox behavior is about reducing the second delay.
The inbox should update by itself
When the real-time path is available, the active inbox can react to incoming mail as it arrives instead of waiting for the user to reload the page.
That matters most in short flows such as sign-up confirmation, passwordless login, or OTP verification.
Fallback keeps the experience resilient
A real-time connection can occasionally be interrupted by a browser or network condition. The inbox therefore needs a fallback path so a temporary interruption does not turn manual refresh into a permanent requirement.
The practical takeaway
MailOnce can optimize the part it controls: surfacing mail after receipt. Sender-side delay remains outside the inbox.
Try MailOnce
Open a private temporary inbox
Create a temporary address and receive the message without exposing your regular inbox.
Create temporary emailRelated receiving guides
Continue with the guides that connect most closely to what you just read.
How Does Temporary Email Receive Messages?
Follow an incoming email from the sender to your active MailOnce inbox.
Read guideDo I Need to Refresh MailOnce for New Messages?
Why manual refresh is normally unnecessary and what to do if a message is taking longer than expected.
Read guideHow Quickly Do Temporary Emails Arrive?
Separate MailOnce inbox speed from sender and internet mail-delivery time.
Read guide