Pricing
Every check is free. You pay only for the fix, for monitoring more than 3 domains, or for API volume. No subscription: nothing renews.
Fix Kit: $1
One payment, one domain, no account.
The corrected SPF, DMARC and DKIM records for your domain and mail provider, written from its live DNS and ready to paste at your DNS host. See what your kit contains first, free.
Monitoring: Sender Guard passes
Free for 3 domains. A pass covers more, for 30 days.
API credits
One credit checks one address or one CSV row. Credits never expire.
Credits are added to your account: create one free with 100 credits, or buy from your dashboard. USDC packs from $1 are there too.
For AI agents
Pay per call in USDC on Base over x402, or with credits.
Checks from $0.01, lists of up to 20 domains for $0.02, a Fix Kit for $0.25. The MCP server and every endpoint are described in llms.txt and the x402 manifest.
Questions
Do I need an account?
Not for a Fix Kit or a Sender Guard pass: you pay and get it on the same page. Credit packs are added to an account, so they need one.
How do I pay?
By card or PayPal through PayPal's checkout, where you do not need a PayPal account. You can also pay in USDC on the Base network.
Does anything renew?
No. A pass lasts 30 days and stops; credits never expire. Nothing is charged again unless you buy again.
What is free?
Every check on this site, SPF flattening, a preview of your Fix Kit, daily monitoring for 3 domains, and 100 API credits.
What is in a Fix Kit?
The corrected SPF, DMARC and DKIM records for one domain and its mail provider, written from its live DNS, in order, with the reason for each. If your domain needs no new records, the advice is free.
Can an AI agent pay?
Yes. Agents pay per call in USDC over x402, or with API credits. A Fix Kit costs an agent $0.25; checks start at $0.01.