60 blacklists scanned per check
Is My EmailBlacklisted?
Your emails are silently dying. Blacklists, broken DNS, weak authentication — we find it all. Scan 60 blacklists in seconds and get the exact steps to fix every issue.
Free instant check — no signup required
Built for email deliverability
Monitoring 60 blacklists in real time
Features
The toolkit Gmail admins wish they had
Blacklist scanning, DNS authentication, SMTP diagnostics, and incident playbooks — all in one place.
60-Blacklist Radar
Continuous scanning across every major blacklist. The moment you're listed, you'll know — not days later when emails start bouncing.
DNS Auth Deep Scan
SPF lookup limits, DKIM key strength, DMARC alignment gaps — we catch the misconfigurations that silently kill deliverability.
SMTP Diagnostics
TLS handshake, reverse DNS, open relay detection, banner fingerprinting. We test your mail server like an attacker would.
Multi-Channel Alerts
Email, Slack, webhooks, SMS. The moment something changes, you know. Configure per-domain alert rules.
Delisting Playbooks
Every blacklist has a different removal process. We give you the exact steps — no more Googling 'how to delist from Spamhaus'.
Automated Reports
Weekly or monthly deliverability reports in PDF and CSV. White-label them for clients on Agency plans.
How It Works
From zero to monitored in 30 seconds
No configuration. No DNS changes. Just enter your domain and we handle the rest.
Step 01
Add Your Domain
Enter your domain or IP address. Setup takes less than 30 seconds, no configuration required.
Step 02
We Monitor 24/7
Our systems continuously check your domain against blacklists and validate your DNS and SMTP health.
Step 03
Get Instant Alerts
Receive notifications the moment an issue is detected, with clear instructions on how to fix it.
Why choose us
Built for teams, not just sysadmins
MXToolbox charges $129/mo for basic monitoring. We give you more features, better alerts, and delisting playbooks — starting free.
| Feature | IsMyEmailBlacklisted | MXToolbox |
|---|---|---|
| Blacklists checked | 60 | 100+ |
| Results speed | < 10 seconds | ~30 seconds |
| SPF / DKIM / DMARC | ✓ + fix guidance | ✓ |
| Delisting playbooks | ✓ 19 step-by-step guides | ✗ |
| Automated monitoring | ✓ Every 5 min | Paid add-on |
| Alerts | Email, Slack, webhook, SMS | Email only |
| Email spoofing test | ✓ Free | ✗ |
| 17 free DNS tools | ✓ No signup | ✗ |
| Starting price | Free forever | $129/mo |
Pricing
Pricing that doesn't punish growth
Start free. Scale when you're ready. No surprise invoices, cancel anytime.
Free
Perfect for personal domains
- 2 domains
- Unlimited manual checks
- All 60 blacklists checked
- SPF, DKIM & DMARC checks
- Dashboard alerts
Starter
For small businesses and freelancers
- 5 domains
- Hourly automated checks
- 60 blacklists monitored
- Full DNS + SMTP checks
- Email alerts
- PDF report export
- Tailored playbooks
Pro
For growing teams and agencies
- 25 domains
- 15-minute check intervals
- 60 blacklists monitored
- Email + Slack + Webhook alerts
- PDF + CSV export
- 10 team members
- Automated playbooks
Agency
For agencies managing client domains
- 100 domains
- 5-minute check intervals
- All alert channels + SMS
- White-label reports
- Unlimited team members
- Full API access
- Priority support
Why IsMyEmailBlacklisted
We check what Gmail checks — before Gmail does
The same blacklists, DNS records, and authentication checks that determine whether your email lands in the inbox or the void.
60 Blacklists. Zero Blind Spots.
Spamhaus, Barracuda, SpamCop, UCEPROTECT, SpamRATS, and more. Every list that matters, every check that counts.
Parallel DNS. Instant Results.
We fire 60 concurrent lookups and return your full report in under 10 seconds. Not minutes — seconds.
Fix It, Don't Just Find It.
Every issue comes with a step-by-step remediation playbook. We don't just tell you what's broken — we tell you how to fix it.
What is an email blacklist?
An email blacklist (also called a DNSBL or RBL) is a real-time database of IP addresses and domains that have been flagged for sending spam or suspicious email. Major inbox providers like Gmail, Outlook, and Yahoo consult these lists to decide whether to deliver, filter, or block your emails.
Getting listed can happen to any domain — a compromised server, misconfigured mail relay, or even a brief spike in complaint rates. The worst part? You often don't know you're listed until customers start reporting missing emails.
IsMyEmailBlacklisted checks your domain and sending IP against all 60 major blacklists in parallel, returning results in under 10 seconds. If you're listed, you get the exact steps to get removed.
Why your emails go to spam
Spam filtering is complex. Even a perfectly legitimate email can land in spam if your sending infrastructure has gaps. The most common causes:
- Blacklisted IP or domain — Your sending IP appears on one or more spam databases
- Missing or invalid SPF record — Receiving servers can't verify you're authorized to send (RFC 7208)
- No DKIM signature — Messages aren't cryptographically signed, lowering trust (RFC 6376)
- Weak DMARC policy — No enforcement means spoofers can impersonate your domain (RFC 7489)
- Missing reverse DNS (PTR) — No PTR record is an instant red flag for spam filters (RFC 8461)
17 free email security tools — no account needed
SPF checker, DKIM validator, DMARC analyzer, SMTP scanner, email header parser, and more.
Platform Capabilities
Everything to protect your sender reputation
Real-time monitoring, actionable alerts, and step-by-step delisting guides — all verifiable, all built in.
< 0s
per full scan
60 Blacklists Checked
Every scan queries Spamhaus, Barracuda, SpamCop, UCEPROTECT, SpamRATS, and 55 other blacklist databases in parallel.
24/7
monitoring
5-Minute Check Intervals
Agency plans run automated checks every 5 minutes. Detect blacklist events within minutes, not days.
0
playbooks
Delisting Playbooks
Each blacklist has a specific delisting process. We provide step-by-step guides with direct links to each provider's removal form.
0
alert channels
Multi-Channel Alerts
Get notified via email, Slack, webhooks, or SMS the moment your domain or IP appears on any blacklist.
0
auth protocols
Full DNS Validation
We validate your SPF, DKIM, and DMARC records against RFC specifications and flag misconfigurations that hurt deliverability.
0%
coverage
SMTP Health Checks
Verify your mail server responds correctly with proper TLS, reverse DNS, and banner configuration. Catch issues before recipients do.
FAQ
Frequently asked questions
What is an email blacklist?
How many blacklists does IsMyEmailBlacklisted check?
How do I get removed from an email blacklist?
What are SPF, DKIM, and DMARC?
Is there a free plan?
How often are blacklist checks performed?
Why are my emails going to spam?
Can I monitor multiple domains?
What happens when I get blacklisted?
Every hour you're blacklisted is revenue you'll never recover. Start monitoring now — it takes 30 seconds.
No credit card required • 2 domains free forever • Setup in 30 seconds