# B2BDomainSignalVerify: is this a real, mail-ready company domain?

**B2BDomainSignalVerify is a free, read-only check with 6 automated tests: Check up to 25 company domains at once before you import a lead list or approve a signup. For each domain we read public DNS and the website: mail servers (MX), the email provider (Google Workspace, Microsoft 365, Mimecast, Proofpoint and more), SPF and DMARC strictness, disposable or free-mail domains, and whether the company website is live. Results are instant; copy-paste fixes and monitoring start at $4.99. It is also available to AI agents as the MCP tool verify_corporate_domain_signals.**

Check up to 25 company domains at once before you import a lead list or approve a signup. For each domain we read public DNS and the website: mail servers (MX), the email provider (Google Workspace, Microsoft 365, Mimecast, Proofpoint and more), SPF and DMARC strictness, disposable or free-mail domains, and whether the company website is live.

## Unlock the complete deliverable

Your free check above is complete. The fix pack adds a copy-paste fix for every item that needs attention. The first 3 are below, free.

Tailor unlock for: My businessClient / agency auditSales / lead list

Add Pro monitoring instead: Monitor (10 domain lists), $29/month, re-checks on a schedule and emails changes

Unlock everything — $4.99 one-time →

Card, Apple Pay, Google Pay or Link via Stripe; refunds on request within 14 days.

✓ Read-only, live public data · Key and unlock right after payment · Card, Apple Pay, Google Pay or Link via Stripe · Refunds on request within 14 days

Preview what the unlock includes
- A copy-paste fix for every check that needs attention, written for your page
- Where each fix goes (page HTML, server headers or DNS) and how to confirm it
- Re-run the free check any time to verify

Already paid? Enter your key or email to unlock

Domain-level only: public DNS lookups and one home-page request per domain. We never contact mail servers, test or guess mailboxes, or process personal addresses (anything before an @ is discarded).

## Plans

Monthly
Yearly

### Full domain signal Report

$4.99 one-time

- One-time $4.99: the full domain signal report and export for one target
- Unlocked instantly with your key

Get Full domain signal Report — $4.99 →

### Monitor (10 domain lists)

$29 / month ($0.95/day)

- Daily re-check of up to 10 domain lists. Billed monthly (or yearly at the annual price); cancel any time
- Change log on your watch dashboard and API, plus email alerts on changes

Start Monitor (10 domain lists) →

### Monitor Pro (50 domain lists)

$79 / month ($2.60/day)

- Daily re-check of up to 50 domain lists. Billed monthly (or yearly at the annual price); cancel any time
- Change log, CSV export and API access

Start Monitor Pro (50 domain lists) →

## More ways to buy

### 500 API / MCP Credits

$9.99 one-time

- 500 full (unredacted) REST or MCP calls across every product
- Credits never expire

Buy now

### Unlimited API / MCP Key

$29 / month

- Unlimited full REST and MCP calls across every product. Billed monthly (or yearly at the annual price); cancel any time
- For Make, Zapier, n8n and AI agents

Subscribe

### Watch My Domain

$5 / month

- Weekly read-only re-check of one domain. Billed monthly (or yearly at the annual price); cancel any time
- Email when the result changes

Subscribe

### White-Label Client Report

$9.99 one-time

- One downloadable client-ready HTML report with your agency name and domain in the header
- No branding from us

Buy now

### Agency White-Label Pass

$79 / month

- Unlimited white-label client reports for this tool. Billed monthly (or yearly at the annual price); cancel any time

Subscribe

API: 10 free calls per day without a key. Datasets contain public records only, at organization level.

Payments are processed securely by Stripe. Refunds are available by default within the first 14 days of paid service.

## Copy-paste fix pack

## Often used together

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- [CompoundedRxClaimsAudit](/compoundedrxclaimsaudit)