Boost deliverability and prevent spoofing  with a verified DKIM Record
A missing or invalid DKIM record leaves your domain open to spoofing and phishing attacks. Without DKIM, inbox providers can’t verify that your emails are authentic, which hurts deliverability and trust.
Smartlead’s DKIM Record Checker instantly validates your DNS TXT record, ensuring your domain is securely signing outgoing messages.
SPF record generator
Ensure you send emails only through your authorized servers and reduce spoofing risks while improving deliverability.
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DKIM record generator
Check if DKIM records are set up correctly for your domain. Ensure your email authentication policies protect your domain.
Get DKIM RecordHow to verify your DKIM records in  3 simple steps
Enter your domain
Simply type in your domain name in the provided field.
Enter your DKIM selector
If you know your DKIM selector (like default or Google), enter it in the second field. If you're unsure, leave it blank — the tool will attempt a standard lookup.
Click "Look Up"
Hit the "Look Up" button to check your DKIM records and see the results instantly.
What is DKIM and why does it matter?
DKIM (DomainKeys Identified Mail) is an essential email authentication method that uses a cryptographic signature to verify that an email is sent from an authorized source and hasn’t been altered in transit.
When your domain’s DKIM record is correctly set up, it prevents spoofing and protects your emails from phishing attacks, ensuring that inbox providers like Gmail, Yahoo, and Outlook trust your emails.
Without DKIM, your emails are more likely to be flagged as spam, resulting in poor deliverability and a damaged sender reputation.
A typical DMARC record looks something like this:
Prevent Email Spoofing: Ensure only authorized sources can send emails from your domain.
Boost Deliverability: DKIM helps inbox providers trust your emails, improving the chances they land in the inbox.
Protect Your Brand: Guard your domain against impersonation and safeguard your reputation.
Real-world scenarios where DKIM validation is essential
Protect sensitive data in customer communications
When sending sensitive customer information, like account details, invoices, or passwords, emails must be authenticated. DKIM validation ensures that only authorized senders can communicate on behalf of your domain, preventing email spoofing and safeguarding sensitive data.
Strengthen email security for remote teams
As remote work becomes more common, email security is more important than ever. Validating DKIM records ensures that all emails from your team, whether internal or client-facing, are properly authenticated, reducing the risk of malicious attacks or impersonation.
Build trust with clients and partners
A validated DKIM record sends a message of trust to your clients and partners. It assures them that emails from your domain are authentic, which is vital for maintaining strong business relationships. It’s a simple but powerful way to demonstrate your commitment to security and professionalism.
Ensure compliance with industry regulations
In regulated industries such as finance, healthcare, and legal services, email security is more than just a best practice — it’s a compliance requirement. DKIM validation helps your business meet regulatory standards, ensuring that email communications are safe, verifiable, and legally compliant.
Avoid being flagged by Sspam filters
Without DKIM, your emails may be flagged by spam filters, preventing them from reaching their intended recipients. By regularly validating DKIM records, you reduce the chances of your emails being mistakenly marked as spam, improving deliverability and protecting your domain’s reputation.
Safeguard your brand from phishing attacks
Phishing scams often use email spoofing to trick recipients into believing they’re receiving legitimate communications. A properly configured DKIM record verifies that emails sent from your domain are trustworthy, protecting your brand’s reputation and preventing attackers from exploiting your name.
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Founder, Lambda Group
“The best outbound email marketing software. Customer support - they are so responsive and helpful Features - you can add multiple email domains to the same account.”
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"I can upload hundreds of email accounts, send thousands of cold emails per day, and still have an organized master inbox. This is unseen with any other tool on the market today. I looked..."
Founder, Office Optim
“Smartlead has been extremely helpful with seamlessly onboarding clients, warming up their accounts, and prepping campaigns to send at high volumes while maintaining high deliverability. There are multiple features that allow me to track performance over time and understand when it is time for me to make adjustments, and Vaibhav is constantly making improvements/upgrades to the platform which gives me all the more faith in the future of this great tool.”
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“Our campaigns weren't just about reaching out, but reaching out right, and Smartlead helped us achieve this. It has added immense value to our business by prioritizing email deliverability and customer needs. I would rate it a 9 out of 10”
Co-Founder, Five Element
“Smartlead is an absolute game-changer! With its exceptional features and support from the Smartlead team, I've experienced remarkable success. The customizable platform and cost-effective pricing have revolutionized our cold emailing game. I would rate it 10 out of 10 for satisfaction. A must-have tool for any B2B agency!”
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Frequently asked questions
How Does A DKIM Record Check Differ From An SPF Record Check?
SPF checks authorized email senders based on IP addresses. DKIM verifies the email content hasn't been tampered with using digital signatures.
Is A DKIM Record Difficult To Set Up?
The technical setup might require some expertise. However, many email service providers offer user-friendly interfaces or instructions for configuring DKIM records.
What Are The Benefits Of Using DKIM?
DKIM enhances email security by verifying the authenticity of the sender and ensuring email integrity. It helps protect against phishing and spoofing attacks, improves deliverability, and safeguards your domain's reputation.
How Do I Fix A Failed DKIM Record?
Address failed DKIM records by reviewing DNS entries for errors or mismatches in DKIM selectors or keys. Correct any discrepancies and update the DKIM record accordingly to ensure proper email authentication.
Can I Use Smartlead DKIM Record Lookup Tool To Monitor My DKIM Health Over Time?
Yes, Smartlead’s DKIM record lookup tool can track DKIM configuration changes and verify DKIM records regularly. This helps ensure ongoing email authentication integrity and identifies any issues promptly.
How To Lookup DKIM Records Manually?
Manually look up DKIM records by accessing your domain’s DNS settings through your DNS provider or hosting platform. Search for TXT records named <selector>._domainkey.yourdomain.com.
How Many DKIM Records Can I Have?
There is no strict limit to the number of DKIM records you can have, but each should correspond to a unique selector and key pair. Use separate DKIM records for different email sources or subdomains within your organization for optimal security and authentication.
Do I Need Both SPF And DKIM For Email Security?
While each offers distinct benefits, using both SPF and DKIM provides a more robust email authentication system.
I use a DKIM Record. Why am I Still Getting Emails About Failed DKIM Checks?
There could be a few reasons for this:
1. Incorrect Configuration: Double-check your DKIM record for any typos or errors in syntax.
2. Propagation Delay: Changes to DNS can take some time to propagate across the Internet. Be patient after making edits to your DKIM record.
3. Third-Party Sending Services: If you use a third-party service to send emails on your behalf, ensure their configuration aligns with your DKIM record.
If you're still facing issues after addressing these potential causes, consider getting in touch with your email service or hosting provider.
Where Do I Find My DKIM Public Key?
Your DKIM public key is stored in a DKIM record published in your domain's DNS settings. Look for a TXT record named <selector>._domainkey.yourdomain.com.
Do I Need A Separate DKIM Record For Each Subdomain?
Yes, it's recommended to have separate DKIM records for each subdomain. This practice maintains email security and allows distinct email sources within your domain to be authenticated individually.
What Are Some Common Mistakes People Make When Setting Up DKIM?
Common mistakes include incorrect DKIM record formatting, mismatched selectors or keys, incomplete DNS entries, and failing to update records after key rotation. Careful setup and regular monitoring mitigate these issues.
How To Check The DKIM Record In Your DNS?
Check your DKIM record by querying your domain’s DNS for a TXT record named selector>._domainkey.yourdomain.com. Ensure it contains the correct DKIM public key and other necessary details.