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SoftBot Email Domain Check
x402
SoftBot Email Domain Check is a paid API for AI agents from softbot-emailcheck-mainnet.softbot.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).
Checks a domain's email infrastructure health including MX/A records, null MX, disposable/free provider status, likely typos, SPF/DMARC/DKIM posture, and registration age
Price / call$0.002
Success—
StatusUnknown
How this service works
Email domain check: whether a domain can receive mail (MX/A, null MX), is disposable or a free provider, likely typo, SPF/DMARC/DKIM posture and registration age. Use when an agent needs to vet a company or sender domain rather than a specific mailbox. One domain per call.
Output
Returns structured data about the domain's email infrastructure: whether it can receive mail (MX/A records present or null MX detected), whether it is classified as a disposable or free email provider, whether the domain name appears to be a likely typo of another domain, SPF/DMARC/DKIM posture indicators, and the domain's registration age.
Example use cases
Vetting inbound B2B lead domain
“Before I reply to this sales inquiry from someone at venture-partners.xyz, can you check if that domain actually has mail infrastructure, isn't a throwaway, and has decent SPF and DMARC records?”
Screening supplier email domain
“We just got an invoice from a supplier using billing@quick-invoices.net — can you check if that domain is legitimate, not a free or disposable provider, and has proper email security configured?”
Flagging suspicious newsletter signup
“Someone signed up to our newsletter with a domain called g00gle-mail.com — can you check if that looks like a typo of a real domain, whether it can actually receive mail, and how old the registration is?”
Technical details
Endpoint
POSThttps://softbot-emailcheck-mainnet.softbot.workers.dev/v1/domain?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to vet an entire company or sender domain rather than a specific email address — for example, assessing inbound B2B leads, screening supplier domains, or evaluating whether a domain is legitimate before engaging. It is distinct from a mailbox-level check (which verifies a specific address) and is ideal when you want DNS security posture (SPF/DMARC/DKIM) and domain age signals alongside deliverability information.
Side effects
- Invalid or malformed domain input — returns error indicating bad domain format
- Domain not found in DNS — returns unresolvable status
- Rate limiting or quota exceeded — HTTP 429
- Payment not completed for x402 endpoint — HTTP 402
- Transient DNS lookup failure — may return partial or error result
- Punycode/internationalized domains may not be fully supported
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| domain | string | Single domain, e.g. example.com |
Tags
x402
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