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Terms of use / Updated September 2026
Terms of Service
By using TWININBOX, you agree to these terms. Understand the difference between temporary inboxes and long-term forwarding before choosing an address for important messages.
Long-term forwarding
Verify your login with an email account you control, then manage separate forwarding aliases.
Delivery isn't guaranteed
Sender policies, network issues and recipient filters can affect delivery. Keep copies of important emails.
Use responsibly
Do not use addresses to send spam, bypass security measures or violate anyone's rights.
Service and scope
We provide temporary test email addresses for short-term messages, along with forwarding aliases you can manage after signing in with an email verification code. Temporary email is useful for sign-up flows, verification codes and trials, but it is not a permanent personal inbox and should not be used for important messages you cannot recover.
Forwarding aliases route incoming messages from different sources to an email address you have verified. You are responsible for the security and availability of that inbox, and for activity through your aliases. Using an alias does not change the terms of the sender's service or the destination email provider.
What you can and can't do
Permitted use
- Test sign-up, activation and notification flows for products you own or are authorised to test.
- Use a separate address for each subscription or project to identify where messages come from.
- Extend a temporary inbox before it expires, or pause forwarding aliases you no longer need.
Prohibited use
- Sending or enabling spam, fraud, harassment or malware distribution.
- Bypassing a third-party service's access restrictions, identity checks or security measures.
- Accessing someone else's email, infringing intellectual property or engaging in other unlawful activity.
Expiry and storage limits
| Feature | Limit | What to know |
|---|---|---|
| Temporary inbox | 3 hours by default; extend it before expiry | Expired or replaced addresses and their emails can't be recovered |
| Forwarding history | Retained for up to 30 days | Can be deleted sooner; this isn't a copy of messages in the destination inbox |
| Sign-in and two-step verification | Email verification code; you can also link an authenticator app | Keep access to your login email and authenticator |
Availability and risk
We work to keep email reception and delivery reliable, but can't guarantee that every message will arrive or that the service will always be available. Third-party sending policies, recipient filters, internet outages and abuse prevention measures can all affect how messages are handled.
Don't use a temporary address as your only account recovery method or rely on it for time-sensitive financial, medical or legal notices. Keep anything important in a long-term inbox you control or another secure place.
Suspension, termination and changes
If we detect abuse, unlawful requests or activity that puts infrastructure security at risk, we may restrict addresses, suspend accounts or refuse requests. You can stop using a temporary inbox or delete aliases and records you no longer need from the dashboard.
We may change features or these terms to protect the service, fix issues or comply with the law. We'll announce significant updates on the website where possible. Continuing to use the service after an update means you accept the revised terms.
Contact and data handling
For questions about the service, your account or a dispute, email us at support@twininbox.com with a description of the issue and when it occurred. We'll reply within a reasonable time and may ask you to verify that you control the relevant email account.
For details on how email and account information are stored and deleted, please read our Privacy Policy. This information supplements these terms and does not replace any agreements you have with third-party services.