$

$

$

$

$

$1

USDC

$0.25

ARC

$5

$0.10

$2

REFUND

$1

USDC

Skip to content

Inbox Sent Open inbox

1Sign in
2Claim & price
3Fund & open

Open your inbox

The postage layer for human attention.

Non-custodial, immutable, no admin keys. Messages are public on-chain.

Contract 0x654A…56D4 GitHub Arc docs Developers Privacy

Mainnet uses real USDC.

Home
Inbox
Sent
Me