This section covers three kinds of free tools: disposable addresses, email aliases, and breach checkers. Each protects a different part of your email privacy. Disposable addresses let you give a throwaway inbox to a site you do not trust. Aliases forward mail to your real address while keeping that address hidden. Breach checkers tell you if your email has appeared in a known data leak. All tools listed here are free, legal, and require no credit card. Some ask for an account; none ask for payment.
Have I Been Pwned
Have I Been Pwned is a breach checker. You type an email address and it shows whether that address appears in any known breach dataset. The public lookup is free. The retrieved material does not document a paid requirement for basic checking. An account is not required. The service exists as a public breach-checking lookup using confirmed breach data; the retrieved material does not state a country restriction or a special license for the checker.
Mozilla Monitor
Mozilla Monitor is a breach checker with ongoing monitoring. It scans an address and monitors it for free, with alerts to new exposures. An account is not documented as required in the retrieved material. Mozilla describes it as a free monitor for exposed accounts; the retrieved material does not specify a separate licensing basis.
DuckDuckGo Email Protection
DuckDuckGo Email Protection provides email aliases that strip trackers before forwarding mail to your real inbox. It offers free, unlimited @duck.com aliases. An account is not documented as required. The retrieved material indicates it is a free privacy feature; it does not state a separate payment requirement for the free alias service.
SimpleLogin
SimpleLogin provides email aliases. The free plan includes 10 aliases on shared domain names. An account is not documented as required. The retrieved material says it is a free service with optional paid features such as unlimited aliases and custom domains.
Firefox Relay
Firefox Relay provides email masks or aliases. The free tier gives 5 free email masks. An account is not documented as required. The retrieved material identifies the free mask allowance; it does not document a broader licensing basis.
Addy.io
Addy.io provides email aliases. The free plan lets you create 10 domain aliases on a shared domain for free, or unlimited standard aliases. An account is not documented as required. The retrieved material says it is available on a free plan with optional paid features.
Tempr.email
Tempr.email is a disposable email service. Creating and using disposable emails, and reading incoming emails, is free and possible without registration. Emails remain available for up to 30 days. No registration is required for the free use described. The service itself describes the free use as anonymous and non-binding; the retrieved material does not cite a public-library, open-license, or expired-copyright basis.
Emcognito
Emcognito provides disposable aliases for email forwarding. It is free forever for up to 100 forwards per month and has no credit card requirement. Passkey sign-in is mentioned; the retrieved material says setup happens after first sign-in. The service itself says it is free forever for that forwarding limit; no other legal basis is documented in the retrieved material.
How to choose between them
If you only need to check whether an email address has been in a breach, use Have I Been Pwned or Mozilla Monitor. If you want ongoing alerts when your address appears in a new breach, use Mozilla Monitor. If you want to give a throwaway address to a one-off site and never check it again, use Tempr.email, no account, no registration. If you want to forward mail to your real inbox while keeping that address hidden, use DuckDuckGo Email Protection for unlimited aliases with tracker stripping, or SimpleLogin or Addy.io if you need more than 10 aliases on a free plan. If you want a small number of masks tied to a Firefox account, use Firefox Relay. If you want disposable aliases with a forwarding limit and no credit card, use Emcognito.
Frequently Asked Questions
Do I need an account for any of these?
Have I Been Pwned and Tempr.email do not require an account. Mozilla Monitor, DuckDuckGo Email Protection, SimpleLogin, Firefox Relay, Addy.io, and Emcognito require sign-in of some kind. None require a credit card.
What is the difference between a disposable address and an alias?
A disposable address is a temporary inbox you can use once and abandon. An alias is a forwarding address that sends mail to your real inbox; you can disable or rotate it later. Disposable addresses protect your real inbox from spam. Aliases protect your real address from being exposed to the sender.
Can these tools hide my identity?
No. If you reply from a disposable address or alias, the recipient sees your reply. If you open remote images or click tracked links in forwarded mail, tracking can still work. These tools protect your email address, not your identity.
Do breach checkers fix my passwords?
No. A breach checker only tells you whether your email appears in a known dataset. It does not fix compromised passwords, prevent phishing, or prove that a current password is safe.
Where do these services work?
The retrieved material does not document country restrictions for any of these services. All are accessible from a standard web browser. No service requires a specific country to use the free tier.
The tool itself, free: 10minutemail.now, Tempmail.now.
The guides in this section
- How Temporary Email Addresses Work
- Is Temporary Email Safe? What It Protects and What It Does Not
- How to Check Whether Your Email Was in a Data Breach
- Email Aliases: A Better Answer Than a Throwaway Address
Back up a level: Free Online Tools That Answer One Question.
