Free Email Deliverability Audit & Cold Email Checker
Check authentication, blocklists, links and message content, then get a prioritized score and fixes before your next send.
Processing Your Audit...
Analyzing your email deliverability
We're currently checking your email deliverability, which may take a few minutes. In the meantime, here are some tips to help improve it:
Use a Verified Sending Domain
Make sure your emails are sent from a verified domain with proper DNS records like SPF, DKIM, and DMARC.
Keep Your List Clean
Regularly remove inactive or invalid email addresses to reduce bounce rates and improve sender reputation.
Avoid Spam Triggers
Stay away from excessive use of ALL CAPS, too many links, or spammy keywords that might trigger filters.
Personalize Your Emails
Personalized content increases engagement, which signals to inbox providers that your emails are valuable.
Monitor Engagement Metrics
Track open, click, and bounce rates. High engagement improves reputation; low engagement can lead to inbox placement issues.
Send Consistently
Maintain a regular sending schedule to establish a reliable pattern recognized by email service providers.
Cold Email Deliverability Checker — Ensure Inbox Placement, Not Spam
Sending cold emails but not getting replies? The Cold Email Deliverability Checker is a fast, comprehensive cold email deliverability tool that diagnoses why messages miss the inbox. It combines a full email deliverability audit across content quality, list health, and DNS authentication to maximize inbox placement and response rates. Whether you're sending with your own SMTP or a platform like Mailshake, Apollo, or Lemlist, this email deliverability checker shows exactly what to fix before you hit send.
What This Tool Checks
📝 Content Checks
- Spam keyword density analysis to catch high-risk phrases that trigger filters
- Body length & structure validation to avoid too-short or overly salesy messages
- Personalization token detection to prevent empty fields like
{{first_name}} - URL validation for broken, redirected, or suspicious links
- Unsubscribe link compliance for CAN-SPAM and best practices
- Formatting triggers such as ALL CAPS, excessive punctuation, or image-only emails
- Image-to-text ratio checks to avoid spammy layouts
- Reply-To header validation and HTML validation (doctype, tags, structure)
- Tracking pixel detection to balance analytics with deliverability
🔧 Technical Setup (DNS & Authentication)
- SPF record check to confirm authorized senders
- DKIM record check to verify cryptographic signing
- DMARC policy verification for spoofing protection and alignment
- BIMI record presence to enhance brand trust in the inbox
- DNS blacklist check against major lists (e.g., Spamhaus, Barracuda)
Together, these diagnostics function as an all-in-one SPF DKIM DMARC checker, email blacklist checker, and email content spam checker, giving you a complete view of your cold email health in seconds.
Who It's For
B2B marketers, SDRs, sales teams, founders, and agencies running cold outreach, lead generation, or lifecycle campaigns who need a reliable email deliverability test tool before sending.
Why Deliverability Matters
- ✓ Improve cold email deliverability and inbox placement
- ✓ Diagnose why cold emails go to spam with actionable fixes
- ✓ Protect domain reputation and reduce bounces and complaints
- ✓ Increase open rate, reply rate, and meetings booked
What You Can Expect
How It Works
Paste your subject, body, and optional HTML, then enter your sending domain.
Select the checks to run: content checks, list health, and DNS authentication.
Run the deliverability audit to receive a prioritized report with fixes.
Share a public, hashed link to your deliverability report with your team or clients.
Email Deliverability FAQ
- What is an email deliverability audit?
- An email deliverability audit reviews sender authentication, domain reputation, list quality, message construction and sending behavior to identify why messages may not reach the inbox.
- What does this cold email checker test?
- It checks message content, links, formatting, personalization, unsubscribe handling, reply setup, SPF, DKIM, DMARC, BIMI and major DNS blocklists, depending on the checks you select.
- Do SPF, DKIM and DMARC guarantee inbox placement?
- No. They establish identity and alignment, but mailbox providers also evaluate reputation, recipient engagement, bounces, complaints, content patterns and sending behavior.
- Is the deliverability audit free?
- Yes. You can run the audit from this page and receive a prioritized score and recommended fixes without purchasing a subscription.
- When should I rerun the audit?
- Rerun it after changing a sending provider, domain, DNS record, tracking setup or campaign format, and whenever bounces, replies or inbox placement change unexpectedly.
Continue with the deliverability playbook
Use the audit with a repeatable pre-send process, then review the supporting guides for provider setup, message construction and campaign monitoring.
Run a free cold email deliverability audit now to make sure every campaign is seen, trusted, and ready to convert.