Diagnose before changing anything
Deliverability problems can come from authentication, domain alignment, sending behavior, blocklists, content, provider policies or compromised infrastructure. We start by identifying which layer is failing.
Email Deliverability
Email deliverability help when legitimate business messages are not reaching the inbox.
DSDillon investigates the technical signals behind business email delivery, including SPF, DKIM, DMARC, DNS, message alignment, sending infrastructure and observable reputation issues. The goal is to identify why mail is being filtered or rejected and correct the underlying configuration where possible.
Why it matters
How this affects your business
01
Missed quotes and replies can become lost revenue.
02
Repeated authentication failures can weaken trust in the sending domain.
03
Changing random DNS records without diagnosis can make the problem harder to isolate.
Business Email Health Check
Check your domain’s email setup.
Enter your domain to check its public email records. The results show what we found and what needs a closer look. This check cannot confirm inbox placement. You do not need to enter an email address.
Authentication and alignment
SPF authorizes sending sources, DKIM signs messages and DMARC evaluates alignment and policy. They work together; having one record present does not mean the system is correctly authenticated.
Remediation with evidence
Where the problem is technical, we correct the configuration and retest. Where the evidence points to sending practices or provider reputation, we identify the constraint rather than pretending a DNS edit can solve everything.
Business Email
Email Deliverability & Authentication Remediation
Help investigating and fixing email authentication, spam placement, routing and delivery problems.
Professional
$1,500one-time
For a specific email authentication or delivery problem.
- DNS and mail-flow review
- SPF / DKIM / DMARC analysis
- Sender reputation indicators
- Priority corrective actions
- Implementation of defined fixes
- Verification report
Pay by credit or debit card. Checkout asks for your contact details and information about the work you need.
Broader coverage
Advanced
$3,500one-time
For recurring delivery problems involving several possible causes.
- Everything in Professional
- Expanded routing and provider review
- Spam-placement investigation
- Authentication alignment review
- Cross-domain dependencies
- Order of corrective work
- Post-change validation
Pay by credit or debit card. Checkout asks for your contact details and information about the work you need.
Executive
$7,500one-time
For complex setups, high sending volumes or several domains.
- Everything in Advanced
- Multi-domain remediation
- High-volume sender review
- Complex routing analysis
- Priority incident handling
- Executive remediation brief
- Extended review after changes
Pay by credit or debit card. Checkout asks for your contact details and information about the work you need.
Related guidance
Explore more about Email Deliverability
Business email infrastructure, authentication, migration and deliverability.
