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Free Email Deliverability & Domain Security Checkup

Are your business emails reaching the inbox — or getting blocked, flagged, or sent to spam? Run a quick check of your domain’s email authentication, DNS, blacklist status, and security setup.

No login required. This check uses public DNS and email authentication information.

Check If Your Business Emails Are Going to Spam

Run a free email deliverability check

Enter your domain to check common email deliverability, compliance, and security issues.

No login required. This check uses public DNS and email authentication information.

Free Expert Review

Get a free expert review of your email setup

A Drensys engineer will read through your scan and write up clear, prioritized fixes for SPF, DKIM, DMARC, DNS, blacklist removal, Microsoft 365, Google Workspace, SendGrid, SparkPost, Mailgun, and private SMTP systems.

  • 100% free, no commitment
  • Reply within 1 business day
  • Detailed written assessment
Call 833-DRENSYS

Tell us how to reach you

We’ll attach your scan to your request so the engineer doesn’t have to ask twice.

  • 100% free. No credit card, no commitment.
  • Quick reply. Most requests are answered within 1 business day.
  • Detailed assessment. A real engineer reviews your scan in writing.

We use your details only to respond to this request. No marketing spam.

Prefer to talk? Call 833-DRENSYS

What This Domain Check Reviews

We look at the same signals Google, Microsoft 365, and Yahoo use to decide whether your email reaches the inbox or gets dropped, quarantined, or flagged as spam.

MX records & mail routing
We confirm your domain can actually receive email and that mail-server hostnames, priorities, and reverse DNS line up.
SPF authentication
We validate your SPF record, count DNS lookups, flag overly permissive policies, and identify your authorized senders.
DKIM signatures
We test common DKIM selectors and check for missing keys, weak key length, and broken syntax.
DMARC enforcement
We inspect your DMARC policy (none / quarantine / reject), reporting addresses, alignment, and pct settings.
Blacklist & reputation
We screen the domain and mail-server IPs against major blacklists and look for reputation red flags.
Advanced security
We look for MTA-STS, TLS-RPT, BIMI, DNSSEC, and the abuse / postmaster mailboxes Google and Yahoo expect.

Why SPF, DKIM, and DMARC Matter

Google requires every sender to authenticate with SPF or DKIM, and bulk senders must publish all three. Yahoo enforces the same baseline plus low complaint rates and valid reverse DNS. Without these records, even legitimate business email is treated as suspicious.

SPF
A permission list that tells inbox providers which servers can send on your behalf.
DKIM
A cryptographic signature that proves your messages weren’t altered in transit.
DMARC
The enforcement layer that tells providers what to do when SPF or DKIM fail.

How Drensys Helps Fix Email Deliverability Issues

We don’t just hand you a report. Drensys engineers configure, monitor, and maintain email infrastructure for businesses across regulated and non-regulated industries.

Email Deliverability Services

How often do your emails to clients end up in the spam folder? Many mass email platforms can only tell you if your message was delivered, but not whether it landed in the recipient’s inbox or was flagged as spam. At Drensys, we know how crucial timely and accurate email delivery is for business success.

  • Diagnosis, treatment, and monitoring of your domains to ensure compliance
  • DKIM, SPF, DMARC validation, cleanup, and maintenance
  • Domain Registrar and DNS record monitoring and upkeep
  • ARC monitoring and alerting
  • Domain Reputation and Blacklist monitoring
  • Email migration assistant

Email Security Services

While email is essential for communication, it can also pose serious risks if proper security measures aren’t in place. Without effective email filtering, a single click on a malicious link in a phishing email could lead to ransomware, locking you out of your entire system.

  • Email Security Gateway with email encryption and reporting
  • 96-hour email service failover in case of outage
  • DKIM and SPF monitoring
  • Spam, malware, and advanced threat protection
  • Phishing and impersonation protection
  • Account takeover protection
  • Email domain fraud protection
  • Webmail security
  • Zero Trust access for Microsoft 365

Marketing and Mass Mailing

The days of sending thousands of emails in just a few minutes are behind us. Today, email providers use advanced security measures, including AI, making it more challenging to send marketing emails. Marketing emails are often flagged as spam or completely blocked, damaging the domain’s reputation and delivery rates. At Drensys, our specialized engineers design a strategy that ensures high deliverability while maintaining security.

  • Domain signing and custom ongoing email warm-up techniques for inbox delivery
  • Weekly SPAM and deliverability testing
  • Integrations with SendGrid, SparkPost, and private SMTP relays
  • Email scrubbing and monitoring of soft-blocks, bounces, and spam traps

Already have a scan result above? Drensys engineers will turn it into a fix list.

Request an Expert Email Review