DKIM Analyzer | Free DKIM Analyzer Tool

Key Takeaways

DKIM is critical for email authentication: Properly signed emails improve deliverability and protect your domain from abuse.
Manual DKIM checks are slow and error-prone: Inspecting headers one by one provides limited visibility and can be confusing.
A DKIM analyzer automates the process: Quickly validates your DKIM records, identifies errors, and provides actionable insights.
Two analysis options are available: Long-term monitoring for ongoing visibility, and instant checks for immediate results.
Benefits extend beyond validation: Improve deliverability, protect your brand, save time, and maintain a healthy DKIM setup over time.

Are your emails being sent to spam? Email authentication protocols like DMARC, SPF, and DomainKeys Identified Mail (DKIM) can prevent this. But manually analyzing DKIM records can be tricky and time-consuming. A DKIM analyzer simplifies the process by automatically validating your records, identifying errors, providing detailed insights on DKIM performance, and ensuring your emails pass authentication smoothly.

What is a DKIM Analyzer?

A DKIM analyzer is a tool that automatically checks your DKIM signatures to confirm whether they are passing or failing. Instead of manually digging through DNS records and headers, it gives you instant insights into the health of your DKIM setup.

By verifying that your DKIM signatures are valid, a DKIM analyzer helps ensure your emails are authentic, unaltered, and trusted by receiving servers. This protects your brand reputation, improves deliverability, and keeps attackers from impersonating your domain.

At PowerDMARC, we go beyond just analysis. We provide a hosted DKIM solution as part of our complete email authentication suite, making setup, management, and ongoing monitoring easier than ever.

How to Analyze DKIM: Manual vs. Automated

Manual Method (The Hard Way)

To analyze DKIM results manually

1. Open the message (the DKIM results for which you want to analyze) in your mailbox. Here we are taking the example of a Gmail inbox. Click on “More” > “Show Original”

2. Under Original Message, you can inspect your DKIM header results

Here, the message passed DKIM. In case it failed, the status will mention “FAIL” for the given domain name.

3. You can further investigate your message headers by scrolling down to view the raw file. Search for “Authentication-Results:”

Drawbacks of the Manual Method

Lack of complete visibility and transparency
The reason for DKIM fail not specified
Difficulty in navigating and troubleshooting issues
Authentication headers have to be analyzed one email at a time

Automated Method (The Easy Way)

Checking DKIM doesn’t have to be complicated. With our tool, you can verify and monitor your DKIM records in two simple ways:

Method 1: Long-Term Solution

1. Create a free account on PowerDMARC

2. Register your domain(s)

3. Navigate to Hosted Services > Hosted DKIM

4. Click on the “Analytics” tab to gain complete visibility into your DKIM performance.

Advantages of this method:

Monitor performance by selector and sending service for full DKIM visibility.
View results over 7 days, 1 month, or custom ranges to spot trends.
Get instant totals for selectors, services, and signed vs. unsigned email volume.
Check email volume, pass rates, and last usage per selector.
Download data to CSV for easy reporting and team sharing.

Method 2: Instant Results

1. On the PowerDMARC portal, go to Analysis Tools > PowerToolbox

2. In the PowerTool, select “DKIM” and enter your domain, and hit “Lookup”

3. Our tool instantly finds your selector, extracts your DKIM public key, tags, validity status, and error details

Advantages of this method:

Enter your domain name in the DKIM checker to get a quick analysis immediately.
Quickly see if your DKIM passed or failed.
Understand why something failed so you can fix it right away.

Why Use a DKIM Analyzer?

Ensuring your emails are authenticated correctly is essential for both deliverability and security. A DKIM analyzer makes this process simple, helping you monitor your email signatures, identify issues, and take action before problems impact your inbox placement or brand reputation. Here are the key benefits:

Improve Deliverability: Stop your emails from landing in spam folders and reach your recipients reliably.
Protect Your Brand: Prevent phishing attacks and ensure your domain isn’t misused by malicious actors by combining error-free DKIM with DMARC.
Save Time & Effort: Automate complex, technical DKIM checks instead of manually analyzing headers and records.
Actionable Insights: Understand exactly why a DKIM check fails and how to fix it, rather than dealing with confusing raw data.
Ongoing Monitoring: Track multiple selectors and sending services over time to maintain a healthy DKIM setup.

Final Thoughts

Maintaining your email reputation doesn’t have to be a headache. Manual DKIM checks are slow, error-prone, and risky, leaving your emails vulnerable to spam filters and impersonation attacks. Using a DKIM analyzer ensures your emails are properly authenticated, protecting your brand, improving deliverability, and giving you peace of mind.

Don’t wait until a critical email lands in spam. Take control of your email authentication today with our free DKIM analyzer tool. Instantly check your DKIM signatures, identify issues, and secure your emails with ease.

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Yunes Tarada

Domain & Email Security Expert at PowerDMARC

Yunes is an Operations Team Lead at PowerDMARC with expert knowledge in email authentication and security. Yunes is a Microsoft-certified Azure Administrator Associate with certifications in CompTIA A+ and many more.

What is a DKIM Analyzer? (And Why You Need One)