Make strangers pay to email you.
Anyone you don't know pays $0.50 (or whatever you set) before their email reaches your inbox. You keep the money. Spam stops. People you know still get through free.
Free to set up. We take a cut only when a stranger pays.
How it works
Three steps. Zero new apps to check.
Connect Gmail or Outlook
We import your contacts and everyone you've emailed. They're whitelisted before a single message is filtered.
Strangers get one polite note
Their email waits in a Pending folder. They get a single automated reply with a pay link. Never twice in a week.
They pay. You get paid.
Payment drops the message into your inbox, unread, labeled Paid. The money goes to your Stripe account.
Who rides free
Strict with strangers. Never with your people.
Your contacts
Synced from Google Contacts.
Anyone you've emailed
Every recipient from the last three years, kept up to date.
Replies in your threads
If you started it, they can answer it.
Real receipts & newsletters
Only from verified company domains. "Your receipt" from a Gmail account still pays.
Domains you trust
Add @yourcompany.com once.
People who paid before
Optional: pay once, through forever.
When in doubt, InboxToll lets mail through. Nothing is ever deleted unless you choose Trash, and you can release anything with one click.
The math
Honest numbers, down to the cent.
You set the price. Senders cover card fees on top, so your toll isn't eaten by processing. Raise it whenever your inbox gets popular. Payment guarantees delivery, not a reply.
For AI agents
Your agent can run it. Theirs can pay it.
Tell Claude, ChatGPT, or Cursor to “set up InboxToll at $1” and it handles the rest through our MCP server. Connect your agent →
More email is being written by AI. With InboxToll, an AI agent can pay a held message's toll on its own, over HTTP 402 with Stripe's Machine Payments Protocol. You can set a separate, higher price for agents. How agents pay →
$ curl -i https://inboxtoll.com/api/v1/pay/pm_8f2c…
HTTP/1.1 402 Payment Required
WWW-Authenticate: Payment method="stripe", intent="charge" …
{ "amount": "2.37", "currency": "USD" }FAQ
Questions, answered.
Do you read my email?+
No. InboxToll reads message headers (sender, subject, authentication results) to decide what to hold. It never downloads or stores message bodies.
What if someone important emails me?+
Contacts, people you've written to, and your own threads always get through. Anything held sits in a Pending folder you can see in Gmail or Outlook, and one click releases it.
Can spammers abuse the auto-reply?+
No. We never reply to spoofed senders, no-reply addresses, mailing lists, or bounces, and each sender gets at most one request per week, under a daily cap.
Who gets the money?+
You do, through Stripe. On a $0.50 toll you keep $0.40. Senders pay the card fee on top.
What if I release a message before they pay?+
Then it's free for them. If a payment races in anyway, it's refunded automatically.
Does it work with Outlook?+
Yes. Outlook.com, Hotmail, Live, and Microsoft 365 all work. Some company Microsoft 365 accounts need their IT admin to approve InboxToll first.
Put a price on your attention.
Two minutes to set up. Your people never notice. Strangers finally do.
Start getting paid →