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Deterministic compliance

Run a free domain check in under 5 seconds.

SendCheck gives you transparent SPF, DKIM, DMARC, and BIMI fixes with zero guesswork. Paste a domain, ship the recommended records, and clear Gmail + Yahoo’s 2024 requirements without warm-up networks or expensive audits.

Run a free domain checkView dashboard

Free tier includes 1 domain, on-demand checks, and in-app remediation guidance. Upgrade for drift monitoring, alerts, and PDF exports.

Sample report

deliverability.io

SPF ready
include:_spf.google.com · include:sendgrid.net · -all
DKIM selector missing
Add selector google with 2048-bit key.
DMARC policy too soft
Update to v=DMARC1; p=quarantine; rua=mailto:dmarc@domain

Want to explore interactively? Open the sample report →

What you get

Every plan includes fast DNS scans, deterministic scoring, and transparent remediation steps.

Deterministic DNS engine
Our Go microservice calls Cloudflare and Google DoH to validate SPF, DKIM, DMARC, and BIMI in real time. Every response includes rationale and copy-ready fixes.
  • No inbox seeds or heuristics—just RFC-aligned checks.
  • Lookup depth analysis so SPF records never exceed the 10-lookup limit.
  • DKIM selector discovery with alignment hints for each provider.
Provider-grade guidance
We maintain templates for the major DNS hosts, ESPs, and SMTP relays so you paste once and pass policy audits.
  • Cloudflare, GoDaddy, Route 53, Azure DNS, and more.
  • Guided DKIM key rotation with provider-specific selectors.
  • Automatic BIMI SVG validation before you request a VMC.
Drift monitoring & reporting
Starter and Team plans run nightly jobs to catch regressions before Gmail or Yahoo flag them.
  • Upstash-backed queue to retry checks and fan out alerts.
  • Resend / SendGrid notifications when policies soften or keys expire.
  • PDF exports powered by Playwright for audit trails and client reporting.
Team workflows
Organize domains into workspaces, collaborate on alerts, and export compliance runs for stakeholders.
  • Shared workspace with role-based permissions (coming soon).
  • Close alerts as remediations land, capture timestamps for SOC evidence.
  • API-first architecture so you can pipe results into internal tooling.

Pricing

Deterministic guidance for solo senders, agencies, and platforms that need verifiable compliance.

Free
Baseline health for a single sending domain.
$0
  • 1 domain tracked
  • Manual checks
  • In-app guidance
Get started free
Starter Popular
Nightly monitoring and PDF exports for a single sender.
$5/mo
  • Up to 3 domains
  • Nightly drift alerts
  • Unlimited PDF exports
  • Email notifications
Upgrade to Starter
Team
Agency-grade monitoring for multiple brands.
$9/mo
  • Up to 8 domains
  • Nightly drift alerts
  • Unlimited PDF exports
  • Priority email notifications
Scale with Team

Frequently asked questions

Ship authentication fixes with confidence

Still have questions? Email hello@sendcheck.email and we'll help you get coverage.

We run deterministic DNS lookups for SPF, DKIM, DMARC, and BIMI using our Go microservice. No seed inboxes or heuristics—just exact guidance on what to fix.