Documentation
❓ FAQ
Quick answers to common questions.
Is testsmail free?
The disposable inbox and the tools are free to use. Some account features and plans are paid — see Billing & Plans for details.
Do disposable messages last forever?
No. Disposable messages are temporary and may be deleted automatically after a period. Save anything you need to keep.
Can other people see my disposable inbox?
Public disposable inboxes can be viewed by anyone who knows the address, so use them only for non-sensitive sign-ups.
How big a file can I send with File Transfer?
Up to 50 MB per transfer. It’s relayed live and isn’t stored long-term, so it’s best for quick sharing.
How do I get help?
Browse these docs first. If you still need help, use the Contact page to reach the team.