Email Deliverability Audit: SPF, DKIM, DMARC, MX, BIMI
Pricing
from $10.00 / 1,000 domain auditeds
Email Deliverability Audit: SPF, DKIM, DMARC, MX, BIMI
Bulk email deliverability audit. Checks SPF, DKIM, DMARC, MX, BIMI and MTA-STS for each domain, grades it A to F and gives the exact fix. Built for agencies and teams meeting Gmail and Yahoo sender rules.
Pricing
from $10.00 / 1,000 domain auditeds
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Brightrun Labs
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3 days ago
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Audit the email authentication of any number of sending domains in one run. Each domain gets an A to F grade, a 0 to 100 score, and a plain-English list of what to fix first.
$10 per 1,000 domains audited. Invalid domains and failed lookups are free.
Who it is for
- Agencies and freelancers onboarding clients onto cold email, newsletters or CRM sending.
- Ops and marketing teams checking they meet the Gmail and Yahoo bulk-sender rules (SPF, DKIM and DMARC required).
- Lead-gen and sales teams screening prospect domains before outreach.
What it checks
| Check | What you get |
|---|---|
| SPF | Present, single record, DNS-lookup count against the 10 limit, all qualifier, deprecated ptr |
| DKIM | Probes 37 common selectors (Google, Microsoft 365, SendGrid, Mailgun, Mailchimp, Klaviyo, HubSpot, GoHighLevel and more) plus any you add; flags revoked and short keys |
| DMARC | Policy (none / quarantine / reject), pct, report address |
| MX | Records and priority |
| BIMI, MTA-STS | Present or not |
Input
- Domains:
example.com,https://www.example.com/pageorjane@example.comall work. - Extra DKIM selectors: optional, if your platform uses a custom one.
Output (one row per domain)
{"domain": "example.com","grade": "C","score": 71,"summary": "Grade C (71/100). Fix first: DMARC policy is p=none (monitoring only)...","bulkSenderReady": true,"spf": { "status": "ok", "lookups": 6, "allQualifier": "~" },"dkim": { "status": "found", "selectors": [{ "selector": "google" }] },"dmarc": { "policy": "none", "pct": 100, "reportAddress": "mailto:dmarc@example.com" },"mx": { "count": 5 },"issues": [{ "severity": "medium", "message": "...", "fix": "..." }]}
Notes
- Reads public DNS only. No emails are sent and nothing is changed on your domain.
- DKIM can only be confirmed for selectors we probe. If yours is custom, add it under Extra DKIM selectors.
- Results reflect DNS at run time; recent changes can take up to 48 hours to propagate.
Support
Open an issue on the Issues tab. We aim to reply within 24 hours on weekdays.