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🔒 End-to-end encrypted

Your Private Email Inbox

Get a secure, encrypted inbox that only you can read. Route mail to your private inbox with a single header — no spam, no exposure, completely free.

Create your free inboxSee the developer API

Why a private inbox?

End-to-end encrypted

Private mail is stored encrypted and is only readable by you after you sign in. Your messages stay yours.

No spam, no noise

Only mail you explicitly route with your applied token lands here, keeping your private inbox clean.

Persistent & account-based

Unlike a throwaway address, your private inbox stays with your account for ongoing, secure access.

100% free

Create an account and use your private inbox at no cost — no credit card, no trial limits.

How it works

  1. 1
    Create a free account & sign in

    Sign up in seconds — no payment details required.

  2. 2
    Switch to Private mode

    Toggle the header pill from Public to Private to view your encrypted inbox.

  3. 3
    Route mail with your applied token

    Add the X-Applied-Token header to incoming messages so they land in your private inbox.

  4. 4
    Read securely, anytime

    Your messages are decrypted only for you, after you authenticate.

Frequently Asked Questions

Common questions about private inboxes on testsmail.

What is a private inbox on testsmail?
A private inbox is a secure, end-to-end encrypted mailbox tied to your account. Unlike a public disposable inbox, mail routed to your private inbox is only readable by you after you sign in.
How does my mail reach my private inbox?
After signing in and switching to Private mode, you route messages to your private inbox by adding the X-Applied-Token header (your unique applied token) to incoming mail. testsmail then files those messages in your encrypted private inbox.
Is the private inbox really encrypted?
Yes. Private mail is stored end-to-end encrypted, so only you can read it after authenticating. testsmail does not expose private mail publicly.
Is the private inbox free?
Yes. Creating an account and using a private inbox is completely free, with no hidden charges.
How is this different from a normal temporary email?
A standard temporary inbox is public and ephemeral, ideal for quick signups. A private inbox is account-based, encrypted, and persistent, ideal when you need ongoing, secure access to your messages.

Ready for a private, encrypted inbox?

Create your free testsmail account and take back control of your email.

Get started free