Readable mail stays local
Messages, contacts, drafts, and private messaging keys remain inside the encrypted vault on your device.
PRIVATE BY DESIGN
Mail that belongs
on your device.
A local-first mail app with end-to-end encrypted delivery and passwordless access. Your readable inbox and private keys stay with you.
Web app availableBuilt for desktop and mobile
THE DIFFERENCE
Your mailbox is not someone else's database.
Plexus transports encrypted packages between devices. It is designed so the service cannot ordinarily read your conversations.
Every delivery is encrypted
Plexus creates a separate end-to-end encrypted package for each recipient device before anything leaves yours.
Passkeys, not passwords
Create and unlock your account with a passkey protected by your device, security key, or password manager.
PRIVACY, IN PLAIN LANGUAGE
What the service sees—and what it doesn't.
Stored by Plexus
Public handles and device keys, authentication records, routing information, encrypted relay packages, and delivery state.
Kept on your device
Readable messages, contacts, drafts, mailbox history, and private messaging keys in your encrypted local vault.
Shared only by your choice
If you deliberately file a safety report, the reported excerpt and context are shared for review.
NEED A HAND?
Real support,
one email away.
Questions about Plexus, passkeys, recovery, privacy, or the Microsoft Store app are welcome.
Email dev@unsync.uk