13RT

13RT

Email that knows
who sold you out.

One address, infinite disguises. Give every company its own version of your email — and the moment one of them leaks it, sells it, or gets breached, you'll know exactly who it was.

How it works

1

Claim your handle

you@13rt.com is yours — and so is every address that ends in .you@13rt.com, automatically, forever. Nothing to set up per alias.

2

Never give out your real address again

Signing up somewhere? Type theirname.you@13rt.com into the form. It lands in the same inbox — permanently tagged with who you gave it to.

3

Catch the betrayal

Their first email — usually the opt-in — arrives asking one question: is this who you gave the address to? One tap confirms them as the rightful sender, or marks the mail as a leak if a stranger got there first. Once you've confirmed the intended sender, mail from anyone else arrives wearing a red flag: this address leaked. Evidence, not suspicion.

Then make it stop

🗡 The kill switch

Done with a leaked alias? Kill it. Every message it ever received is deleted, and all future mail to it is buried before it touches your inbox — with a counter showing how much spam died at the door.

👁 Know when you're read

Mail you send reports back: how many times it was opened, when, and whether it's being opened on devices you didn't send it to.

📥 A real inbox

Read, reply, archive, attachments — a full mail client. Reply as any alias, so companies never learn your real address even when you write back.

Pricing

Free

$0
  • Your permanent @13rt.com address
  • Full inbox — send, receive, archive
  • 1 tracked alias at a time
  • Leak detection & kill switch on it

Unlimited

$48/year
  • Everything in Free
  • Unlimited tracked aliases
  • One for every company you ever meet
  • $4 a month to know who sold you out
13RT Mail — a KiND Social product · alice@13rt.com

13RT

Pick your handle. It's yours forever.

@13rt.com

3–20 characters. Letters, numbers, - and _. No dots — dots are how your aliases work: anything.yourname@13rt.com reaches you.

13RT Inbox
13RT
Inbox
Select a message
New message
New alias
Create your address

We sent a 6-digit code to . Enter it to finish.

or