Every feature a disposable inbox should have.
MailU keeps the tool simple and the feature set complete. Everything below is included free, with no account.
Custom addresses
Pick your own username with live availability checking, or let MailU generate a random one. Both work identically.
Real-time inbox
The inbox refreshes itself every 10 seconds and greets new mail with a toast, so codes arrive the moment they're sent.
Developer API & OTP Extraction
Direct REST endpoints, automatic regex OTP code extraction, plaintext /otp/raw streams, and zero-session Master Inbox access for seamless testing.
Attachments and QR
Download attachments straight from the message view, and scan the inbox QR code to carry your session to another device.
24-hour lifetime, extendable
Every inbox lives a full day by default. One click adds another 24 hours, up to 7 days, for projects that need a longer stay.
Private by design
No accounts, no passwords, no profiling. Contents are encrypted at rest and destroyed the moment an inbox expires.
One-click everything
Copy the address, refresh the inbox, extend its life or delete it entirely. Every action is a single tap, on any device.