uMail
Mail between uOS accounts, encrypted.
A familiar mail client with Inbox, Sent, Drafts, Starred, Archive and Trash. Messages go only to other uOS accounts.
Inbox
Quarterly plan
Welcome to the team
Invoice March
Who holds the keys
Encrypted by you, not by us.
Encrypted on your deviceYour browser locks the content before it is sent.
Only you and the people you share with hold the keysWe never have them, so we cannot open, read, scan or hand over your content.
Post-quantumSealed with ML-KEM and ML-DSA, paired with classical algorithms.
What we can seeWhich accounts a message goes to, when, and how large it is.
Familiar foldersStarred, Archive and Trash keep the Inbox short.
ConversationsEarlier messages appear under the one you open.
AttachmentsUp to 20 files, 25 MB in total, encrypted for the recipients.
Recipients from ContactsAlso people on other platforms you know.
SearchFilters your loaded mail on your device.
One mailbox per platformWork mail stays separate from family mail.
Private by design
Post-quantum encrypted: ML-KEM and ML-DSA, paired with proven classical algorithms. Subject and body are encrypted once for each recipient and once for you. uMail does not send or receive internet e-mail, so nothing passes through an outside mail server.