Disposable email that you actually own
One address for newsletters, free trials and one-time codes. Every message auto-deletes two hours after it lands. The inbox stays, the clutter doesn't.
An address you keep
Your inbox stays put. Only the messages expire, so you never re-generate throwaway addresses.
Auto-purge by design
Every message clears two hours after it arrives by default, configurable on paid plans. Nothing piles up.
End-to-end encrypted
Messages are encrypted client-side. We can't read them, and there's zero tracking.
The address outlives the messages
Most disposable email works the other way around: you get an address that dies, so every time a service emails you again (a password reset, a receipt, a renewal notice) the address that received the first message no longer exists. You sign up again with a new one, and the account you made last month is now unreachable.
MailFlat inverts that. The address is yours until you delete it. What expires is the contents: each message clears itself after your plan's retention window. So the newsletter you subscribed to still reaches you next month, but last month's issues are already gone.
What auto-purge actually does
Retention is per plan and applies to received messages. On the free plan it is short by design; paid plans extend it considerably. You can also delete any message yourself at any moment, or empty an inbox in one action while keeping the address registered wherever you already used it.
Nothing is quietly archived somewhere else when a message purges. Deletion takes the attachments with it, so a PDF that arrived with an invoice does not outlive the invoice. A background cleaner does this on a schedule rather than only when you happen to open the inbox, which means the retention window is a real ceiling and not a promise that depends on you visiting.
Where it fits, and where it does not
It fits signups you do not want in your main inbox, free trials, one-time codes, and any service that will email you occasionally and that you may want to keep reachable.
It is a poor fit for mail you need to keep: banking, legal, anything you would go looking for a year later. Retention is a ceiling, not a filing cabinet. It is also not an anonymity tool. It keeps clutter out of your real inbox, which is a different problem from hiding who you are.
Read the details
Frequently asked questions
Does the inbox get deleted?
No. The address stays until you delete it. Only the messages auto-purge, two hours after they land by default.
Do I need an account?
You create a free account to own and manage your inboxes across sessions.
Is it really private?
Messages are end-to-end encrypted on the client. We can't read your mail, and we don't track you.
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