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What happens to your mail

Tiho is a mail program. It opens your own mailbox at your own provider: Microsoft 365, Yandex, Fastmail, mail on your own domain. We do not hand out mailboxes and we do not create them.

Why the browser version is built differently

A browser cannot open connections to mail servers: it only speaks HTTP, and mail runs on other protocols. So the connection to your mail server is held by our server, and the page asks it with ordinary requests.

The app for phone and computer is built differently, and better: it goes to the mailbox directly, and your correspondence does not pass through us at all. In a browser that is not possible — either through a server, or there is no web version.

What we see and what we do not keep

• Messages pass through our server when you open them. It does not save them: read from your mailbox, handed to the browser, forgotten.
• Access to the mailbox lives in memory only, and only while the session is open. It never reaches disk.
• A session with no requests closes after four hours. Restarting the server closes every session at once — you will have to sign in again.
• We show no advertising and pass on no data about you.

Signing in with Microsoft

You type your Microsoft password on Microsoft's own page, not on ours — we do not see it and cannot see it. All we get is the permission you granted to read and send mail, and you can withdraw it in your Microsoft account at any moment.

Exactly two permissions are requested: reading mail over IMAP and sending over SMTP. No access is requested to files, to the calendar, or to the list of colleagues.

Signing in with a password

For providers without Microsoft sign-in, an ordinary password remains. It is passed to your mail server and lives in the session's memory while the session is open. If the mailbox has two-factor protection you need an app password — an ordinary one will not be accepted.

Images in messages

Images in mail often exist in order to tell the sender that the message was opened, when, and from where. So they are not loaded until you ask for them yourself.

Who we are

Tiho is made by tiho.one. Questions — hello@tiho.one.