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is-email-hosted-by-sendgrid
x402
is-email-hosted-by-sendgrid is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Checks whether a domain's email is hosted by SendGrid by looking up its MX records via Cloudflare DoH and matching against SendGrid mail-exchanger patterns, returning a yes/no result with matched hosts.
Price / call$0.01
Success—
StatusUnknown
How this service works
Is the domain's email hosted by sendgrid? Looks up the MX records (Cloudflare DoH) and matches them against sendgrid's mail-exchanger patterns, returning yes/no, the MX hosts and which matched. Provider detection for deliverability, sales and migration work. $0.01 per lookup.
Output
Returns a boolean indicating whether the domain's email is hosted by SendGrid, along with the full list of MX hosts discovered and which specific MX records matched SendGrid's known mail-exchanger patterns.
Example use cases
Sales prospecting email stack detection
“Before I reach out to this lead at stripe.com, can you check if they use SendGrid for their email so I know which email provider they're running on?”
Migration compatibility check
“We're planning to migrate our client's email to a new provider — can you confirm whether their domain, clientbrand.io, is currently hosted by SendGrid?”
Deliverability audit for a partner domain
“I'm troubleshooting deliverability issues and need to know if partnerdomain.com routes their email through SendGrid — can you check their MX records?”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/email/hosted-by/sendgrid?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, single-domain check for SendGrid as the email hosting provider, particularly for sales intelligence, deliverability auditing, or pre-migration discovery. Prefer this over generic DNS tools when you want a pre-built, pattern-matched SendGrid-specific result without writing your own MX parsing logic. For bulk checks across many domains, consider the sibling bulk endpoint instead.
Side effects
- Domain does not exist or has no MX records — returns no match with empty MX list
- Cloudflare DoH lookup timeout or DNS resolution failure
- Domain uses a SendGrid-like MX pattern not yet in the matcher — false negative
- Malformed domain input causing lookup failure
- Payment not processed — 402 response requiring x402 payment of $0.01 USDC
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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