Encrypted memos
Add a note to any payment. It is encrypted on your phone with the recipient’s public key, so only the two of you can read it.
1 satSmallest amount you can send with a memo
How memos workThe Bitcoin wallet built for x402
Hold BSV, BTC and BCH, and pay APIs and AI agents in BSV with x402. Your keys stay on your phone.
Made for the paid internet
3Chains in one wallet: BSV, BTC and BCH
0Accounts, emails or phone numbers needed
0%Fees charged by us
12Words to restore your wallet anywhere
x402 payments
Pay for the internet, one request at a time
x402 is an open standard that uses HTTP status code 402 so a website, API or AI agent can ask for payment inside a normal web request. paymail.ai pays those requests in BSV.
Request
An app or AI agent asks for a paid API, file or page.
Quote
The service replies 402 Payment Required with a price.
Pay
You approve with Face ID, or your agent pays within the limits you set.
Deliver
The service checks the BSV payment and returns the result in seconds.
One request. One payment. One response.
# Your app or agent asks for a paid resource GET /api/report HTTP/1.1 Host: data.example.com # The service quotes a price HTTP/1.1 402 Payment Required PAYMENT-REQUIRED: scheme=exact; network=bsv:mainnet; amount=1000 sat; payTo=… # paymail.ai pays in BSV and repeats the request GET /api/report HTTP/1.1 PAYMENT-SIGNATURE: … HTTP/1.1 200 OK PAYMENT-RESPONSE: settled; txid=9f3c…a41e
Features
Built for sending, not just storing
Send by link
No wallet address? Send BSV to a contact or an email as a link, and take it back any time before it is claimed.
7 daysReminder if a link has not been claimed
About linksRecord on BSV
Keep a photo on the blockchain as your own collectible. Location data is removed before anything is recorded, and you choose the size.
Public, foreverRecorded on BSV. No one, including us, can delete it.
Recording rulesWho holds your keys? You do.
paymail.ai is software, not a bank
We never hold your funds, your keys or your data, so there is nothing for us to lose or freeze.
Safety and reportingKeys stay on your phone
Stored in the device’s secure storage and never sent to a server.
No account
Start without an email or phone number. We collect no personal data.
12-word recovery
Lose your phone and your recovery phrase restores the same wallet.
Face ID on every payment
Each payment is confirmed with biometrics before it leaves.
iPhone and Android
Coming soon to the App Store and Google Play
paymail.ai is in final preparation for iPhone and Android. Launch details will be posted here.
Coming soon to theApp StoreComing soon toGoogle Play
Questions, answered
Does paymail.ai hold my money?
No. paymail.ai is a non-custodial wallet. Your funds live on the blockchain and your keys stay on your phone, so we cannot move, freeze or reverse them.
What is x402?
An open standard that uses the HTTP status code 402 Payment Required so a website, API or AI agent can ask for payment inside a normal web request. The client pays and repeats the request. No account, card or API key is needed.
How does paymail.ai use x402?
When an x402 service asks for payment, the app shows the amount and the recipient. You approve with Face ID and the wallet pays in BSV, directly to that service.
Which coins are supported?
Bitcoin SV (BSV), Bitcoin (BTC) and Bitcoin Cash (BCH). Payments, memos and x402 use BSV. BTC and BCH can be held and sent.
What is a Paymail address?
Paymail is an email-style address for BSV, such as name@example.com, that wallets resolve to a payment destination. paymail.ai can send BSV to Paymail addresses from other wallets.
When will it launch?
paymail.ai is coming to the App Store for iPhone and to Google Play for Android. We will announce the launch date on this site.