RELAY: Calls, Chat & Mail

RELAY is one encrypted line for everything: crystal-clear voice and video calls, instant messaging, live broadcasting, and a real email inbox — all behind one six-digit number that takes seconds to get.

NO PHONE NUMBER. NO SIGNUP FRICTION. Open the app, pick a name, and you're in. Your six-digit number is your identity — share it, print it on a card, or keep it private. No SIM required, no contacts upload, no tracking.

CALLS THAT JUST WORK

• Free voice and video calls to any RELAY number, worldwide
• Group calls with your circles
• Full call history — voice, video, and group, one tap to call back
• Rings on your lock screen like a real phone call

CHAT THAT KEEPS UP

• Instant delivery with sent, delivered, and read receipts
• Photos, files, and multi-attachment albums (download all as one zip)
• Auto-reply when you're away
• Encrypted in transit, end to end

A REAL MAILBOX, BUILT IN Your RELAY number is also an email address: 123456@u.co. Anyone on the internet can mail you — it lands right inside the app, next to your chats. Send, receive, attach. No separate mail app.

GO LIVE IN ONE TAP Broadcast live video to everyone on RELAY or to your contacts only. Viewers chat in real time; you moderate with co-hosts, mute, and kick controls.

YOUR CIRCLES, SORTED

• Contacts organized by circle: VIP, Family, Friends, Team
• My Lists — shared contact pools your whole family or team sees
• Live presence: see who's online right now

PRIVATE BY DESIGN

• No phone number or SIM required
• Media and calls encrypted
• PIN lock and passkey support
• Report and block controls on calls, chats, and live streams
• Your data stays on your account — delete it anytime

RELAY works on Wi-Fi and mobile data, syncs across your devices, and is free to use.

Get your number. You are six digits.