Skip to messages
Kaditham Business Emailbeta

Sign in

to continue to Kaditham Mail

Forgot your password?

Trouble signing in?

Lost your two-factor device? Use a recovery code instead of your password — or use Forgot your password?: the reset accepts the recovery code and turns two-factor off so you can set it up again.

Everything lost — password, authenticator and recovery code? A person can help, or your domain administrator can send you a one-time setup link.

New here? Set up business email

Terms Privacy Support

Private correspondence

Kaditham Business Emailbeta

Encrypted email for professionals, on your own domain.
End-to-end PGP whenever your recipient has a published key · DKIM, SPF, DMARC and MTA-STS configured for you · billed per seat.

Set up your business email

Bring your domain — or pick a brand-new one right here. We handle the encryption, the DNS and the deliverability.

I have an invitation code

Invitations open a mailbox on the inviting domain without payment.

I don’t have an invitation — set up paid email

Already have a mailbox? Sign in

Terms Privacy Support

Private correspondence

Kaditham Business Emailbeta

Set your password

Checking your link…

Your password is turned into a sign-in secret on this device and never sent anywhere as typed. It also opens your encrypted mail — make it one you won’t forget.

Lost everything? A person can help.

Kaditham Business Emailbeta

Payment received

Choose a password for your first mailbox and we'll open it now.

Point your domain here

Add these records at your DNS host. Mail starts flowing as soon as they resolve; DKIM keys rotate automatically from here on.

Kaditham Mail

கkaditham.ieDomains, hosting & the studio

Synced over CalDAV — the same calendar your phone and desktop apps see.

Sealer

Everything here runs in your browser with your own keys — the text never leaves this device.

Your text

Sealed to each recipient's published key and to your own, and signed with your active key when it's unlocked — so recipients can verify it came from you.

Result

Sealed text, unsealed text and signature verdicts appear here.

Contacts

Synced over CardDAV — the same address book your phone and desktop apps see.

New contact

க

Choose a letter to read.

New message

From

    🔒 TLS in transit · encrypted at rest — sent with Kaditham
    Kaditham Business Emailbeta

    Private correspondence

    Settings

    Your name

    Appears in the From line of every letter you send.

    Theme

    Density

    Undo send

    A sent letter waits this long before it leaves, so you can take it back.

    Composer

    A flourish in the compose window only — it is never added to the letters you send.

    Signature

    Added under your letters — new ones and replies, above any quoted text.

    Loading…

    Zero-access storage

    When on, the server seals every incoming letter to your key before writing it to disk — nobody who operates the service can read your stored mail. Letters stored from before it was on are sealed by the sweep after each sign-in (“Older mail, sealed”, above). The envelope — who, to whom, when, and the subject — stays readable so mail can be delivered. Reading sealed mail always needs your key.

    Change password

    Changing the password signs everything out — app passwords keep working.

    App passwords

    For mail apps that sign in with a plain password — phones, Thunderbird, printers. One per device; revoke any without touching the others. They work even with two-factor on, so treat each one like your password: revoke it the moment a device is lost.

    Blocked senders

    Letters from these addresses go straight to Junk Mail the moment they arrive — a fixed rule, not a guess. Marking one of their letters “Not junk” unblocks them again.

    The advanced room. Rotating creates a fresh active key and republishes it; the old key is retired — kept on this device so older letters still open. Each key keeps its own passphrase and its own backup. Everyday privacy — sealing, the recovery kit, kept devices — lives under Privacy & security.

    c
    New message
    /
    Search
    j · k
    Next · previous letter
    e
    Archive
    # · Del
    Move to Trash
    !
    Mark as spam
    s
    Star · unstar
    r · a · f
    Reply · reply all · forward the open letter
    u
    Back to the list
    g · i/s/d/a/t
    Go to Inbox · Starred · Drafts · Archive · Trash
    g · m/c/k
    Go to Mail · Calendar · Contacts
    ⌘K
    Command palette
    Esc
    Close
    Account
    Mail
    Organization

    Welcome back

    Your session timed out. Unlock to continue exactly where you were — nothing has been lost.

    New event

    End-to-end encryption

    Takes a Kaditham backup or a standard armored export (gpg --export-secret-keys --armor). The passphrase below must be the one that unlocks this key — an unencrypted export gets locked with it. Your key only ever leaves this device sealed — locked with your passphrase, which we never receive.

    Save these six words in your password manager (KeePassXC, Bitwarden, Apple Passwords) — Kaditham Mail will not be one. Copy clears the clipboard after 30 seconds.

    Your key is ready — this device can seal and unseal letters.

    Key fingerprint. Compare it out-of-band (a call, a message) when someone wants to verify it's really you: