Passing every check but still in spam?

Gmail, Yahoo! and Outlook also judge your content and domain reputation, and keep private blocklists a DNS scan can't see. Inbox Placement tests for them.

Your scan is a snapshot. Delivery Center keeps watch.

The scanner checks your DNS records and blacklist status right now. Delivery Center monitors them continuously, alerts you when something changes, and covers what a DNS scan can't see.

SignalFree scanDelivery Center adds
DMARCPolicy present, and how strictReports from 500+ inbox providers, every sender identified, guided path from compliance to enforcement
SPFRecord is validSenders missing from SPF, plus SPF Flattening for lookup-limit problems
MXRecords are configuredInbound and outbound mailflow monitoring with latency alerts
BlacklistsDomain and IP status todayEvery sending IP, including ESPs, watched with near real-time alerts
BIMIRecord and certificateBIMI setup and management once you reach enforcement
Inbox placementNot checkedCampaign tests at Google, Yahoo! and Outlook.com
Recipient complaintsNot checkedGoogle spam rate, Yahoo! feedback loops, Microsoft SNDS
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What to do with your results

✓

Everything passed

Keep it that way. Records and senders change, so set up monitoring to hear about problems before your recipients do.

!

DMARC or SPF failing

Find every service sending as your domain and fix alignment to meet bulk sender rules, then move to enforcement to protect your brand and stop spoofing. DMARC Compliance walks you through it.

!

Blacklisted

Follow the delisting steps in the FAQ, then watch every sending IP with Adaptive Blacklist Monitoring.

Built for the way your team sends

Email Marketers

Know your domain is ready before a big send, and test campaigns for inbox placement at Google, Yahoo! and Outlook.

DMARC Adopters

Go beyond "policy found". See every sender's pass rate, get compliant, then move safely to enforcement.

IT Email Administrators

Get alerts when DNS records, blacklist status or mailflow change, instead of finding out from users.

20+ years in email deliverability

42K+Domains trust MxToolbox
100+Blacklists checked
500+DMARC-reporting inbox providers
20M+DMARC XML reports processed monthly

Frequently asked questions

Blacklisted?
  1. Confirm the listing with a free blacklist lookup for your domain and sending IPs.
  2. Fix the cause: a misconfiguration, compromised account or malware, or a spam complaint spike.
  3. Request removal using our delisting instructions for each list.
  4. Re-run the scan above to confirm SPF, DKIM and DMARC are passing.
  5. Stay alerted with a free Blacklist Monitor.

Most listings clear anywhere from overnight to about a week after you fix the cause.

Does the scan cover Gmail, Yahoo! and Outlook blocklists?

No. Those providers keep private blocklists based on how their users respond to your mail. Only an Inbox Placement test can show whether you're affected.

What's the difference between the free and paid blacklist monitor?

The free plan checks one domain on the top 30 blacklists, weekly. Adaptive Blacklist Monitoring in Delivery Center finds and watches all your sending IPs, including ESPs, with near real-time alerts.

How often should I scan?

Any time you change DNS or add a new email service. For ongoing coverage, Delivery Center monitors continuously so you don't have to remember.

Is MxToolbox blocking my email?

No. MxToolbox doesn't block email. It checks a curated set of blocklists and shows which ones list your IP address or domain.

Should I pay to be delisted?

Never. Fix the cause, then request delisting (not whitelisting) and be ready to show what you changed. Each list's Problem Details page explains how to request removal.

Rather have experts handle it? MxToolbox Managed Services fixes your configuration and keeps your email reputation healthy. Learn about Managed Services → or call +1 (866) 698-6652.

Don't wait for the next scan to find a problem

Delivery Center watches your DNS records, senders and blacklists continuously, tests your campaigns for inbox placement, and alerts you the moment something changes. Delivery Center is backed by a 30-day money-back guarantee.

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