Email Deliverability Checker | Stackborne
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Free Tool — No Sign-Up Required

Are your emails reaching inboxes?

Enter your domain to instantly check SPF, DKIM, and DMARC — the three records that decide whether your emails land in inboxes or spam folders.

Please enter a valid domain (e.g. yourdomain.com).

Checks live DNS records. Results in ~5 seconds.

📬 MX Records
🔐 SPF
✍️ DKIM
🛡 DMARC
🖼 BIMI
📬
MX Records
Confirms your domain has email servers configured
🔐
SPF
Controls which servers are allowed to send email for you
✍️
DKIM
A cryptographic signature that proves your emails are genuine
🛡
DMARC
Tells email providers what to do with emails that fail SPF/DKIM

Checking …

📬 Checking MX records
🔐 Checking SPF record
✍️ Checking DKIM — trying 20 common selectors
🛡 Checking DMARC policy
🖼 Checking BIMI record

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