Your email sending reputation is like your credit score— the higher it is, the more likely your emails reach the inbox instead of spam. Whether you’re sending marketing campaigns or transactional messages, checking your sender reputation regularly is crucial for high deliverability.
Here are the 7 best ways to check your email sending reputation in 2025:
1. 🧰 Google Postmaster Tools (For Gmail Reputation)
If you send a decent volume of email to Gmail users, this tool gives you:
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Domain & IP reputation
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Delivery errors
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Spam rate
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Authentication status (SPF, DKIM, DMARC)
Tip: Use a domain that sends at least 100 emails/day to Gmail to access meaningful data.
2. 🧪 SenderScore by Validity (General Reputation Score)
This free tool gives your IP address a score between 0 and 100, based on:
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Complaints
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Volume
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External blocklists
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Infrastructure
Score meanings:
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90–100: Excellent
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70–89: Good
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Below 70: Needs improvement
3. 🛡 Talos Intelligence (Cisco IP Reputation)
Enter your IP or domain to see:
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Email reputation (Good / Neutral / Poor)
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Blacklist status
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Web reputation
Ideal for quickly checking if your domain or server is flagged anywhere.
4. 🧰 MXToolbox Blacklist Check
https://mxtoolbox.com/blacklists.aspx
Checks your IP or domain against 80+ major DNS-based blacklists (DNSBLs) like:
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Spamhaus
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Barracuda
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SURBL
If you're listed, some inbox providers might be rejecting your emails.
5. 📈 MailTester (Spam Score & SMTP Test)
Send a test email to the temporary address they provide. You’ll get:
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SpamAssassin score
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SPF/DKIM/DMARC analysis
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IP blacklisting status
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HTML content check
Great for pre-campaign checks or testing transactional emails.
6. 🔍 Google Safe Browsing Tool
https://transparencyreport.google.com/safe-browsing/search
Make sure your domain is not flagged as deceptive or unsafe by Google Chrome, Gmail, or other Google services. This indirectly impacts your email credibility.
7. 🧠 Use MailCub's Built-in Reputation Dashboard (for MailCub users)
If you're using MailCub, you can view:
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Real-time domain/IP reputation
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Authentication status
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Inbox vs spam delivery analytics
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Warm-up score
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Bounce & complaint trends
Bonus: MailCub provides alerts if your IP or domain gets blacklisted and offers step-by-step fixes.
🚨 Why Sender Reputation Matters
Poor sender reputation can result in:
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Your emails being throttled or rejected
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Higher bounce rates
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Delivery to spam or junk folders
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Damage to brand trust
🛠 Tips to Improve Reputation
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Authenticate domain (SPF, DKIM, DMARC, rDNS)
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Warm up IPs gradually
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Avoid spam trigger words
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Clean your email list regularly
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Engage with your audience (high open and click rates help)
✅ Conclusion
Checking your sender reputation is not a one-time task—it’s something you should monitor weekly if you’re serious about inbox delivery.
Start today by running your domain or IP through these tools and take corrective action early to keep your email performance strong.
