CATCH THE CODE
OTP & SIGNUPS
Use a throwaway address when a site demands email. Copy the code, finish signup, delete the inbox.
KEEP IT PRIVATE
NO OPEN RELAY
Receive-only public plane. Knowing an address never grants read access — only your session does.
TEST WITH CONTROL
FOR BUILDERS
Allocate inboxes, wait for mail, extract codes and links in CI — without shared flaky mailboxes.
You stay in control
Built-in controls
Every inbox has a clear lifecycle. Extend when you need more time. Clear or delete when you are done.
Live receive
New mail appears automatically — no refresh roulette.
Safe reader
Sanitized HTML preview. Remote content blocked by default.
OTP extract
Codes and links pulled out so you can copy in one click.
Hard delete
Revoke access immediately; content is purged on schedule.
Recovery secret
Reopen an inbox on another device without leaking secrets in URLs.
Receive-only MX
Public plane never relays outbound. No open relay risk.
Plans
Quick Free · $0
Privacy Pro · from $5.99
Straight answers
FAQ
- Can anyone read my temp inbox if they know the address?
- No. Delivery and read access are separate. Only the session (or a recovery secret you hold) can open messages.
- Does Mailby send mail for me?
- The public product is receive-only. Outbound submission is authenticated and separate from disposable inboxes.
- How long is mail kept?
- Free inboxes keep mail for about one hour unless you delete earlier. Paid plans unlock longer retention windows.
- Where does SMTP land?
- MX points at mail.mailby.app. The product UI and API live on mailby.app.
Explore Mailby
Product surfaces, docs, and status — same brand, one domain.