Email Security & Deliverability That Actually Works

Your emails are under cyber attack. Your legitimate messages are being blocked from reaching recipient inboxes. We fix both.  

We’re email experts. At SH Consulting, we don't just patch email problems - we build security-first infrastructure that protects your business from abuse while ensuring your legitimate emails reach the inbox every time.

The Email Crisis No One Talks About

35%

of companies are being spoofed - without even knowing it

30%

is considered a "good" open rate across most industries

1.5%

is the average spam complaint rate for newsletter and similar email campaigns

The problem: Email deliverability and security aren't separate issues. As providers like Google and Microsoft tighten defenses against bad actors, poorly configured legitimate senders get caught in the crossfire.

Our solution: Security-first email infrastructure that stops abuse AND ensures email delivery. You don't use ours, we improve & re-build yours. This is important because it gives you flexibility to choose among email partners and avoid vendor lock-in.

What We Do

Email Security

Deploy bulletproof authentication, enable security gateways, and monitor for domain spoofing, phishing, adversary-in-the-middle downgrades, and business email compromise. When incidents occur, we provide rapid forensic analysis and work with your team on investigation and remediation.

Email Deliverability

Full-stack deliverability audits, blacklist remediation, and infrastructure architecture. From startup SaaS to enterprise - we embed with your team to improve inbox placement and sender reputation. Our industry relationships with deliverability teams enable quick resolution of blocking issues and reputation recovery.

Security Research

Continuous vulnerability research across email servers, DNS infrastructure, and authentication protocols. We discover and mitigate threats before they're exploited in the wild.

System Consolidation

Eliminate email infrastructure sprawl. Consolidate multiple ESPs, legacy mail transfer agents (MTAs), and fragmented tools into unified, cost-effective email systems that scale.

Diagnose. Fix. Protect.

A clear three-stage path to email security and deliverability — whether you need an assessment, an active fix, or ongoing managed protection.

Diagnose

Understand exactly where your email and DNS posture is failing - before it costs you revenue or reputation.

Email Deliverability Audit

We analyze your sending infrastructure, IP and domain reputation, content, engagement metrics, and sender behavior to identify exactly what's hurting your inbox placement.

You get a prioritized findings report, executive summary, and live walkthrough sessions with your team.

Tech detail

SPF/DKIM/DMARC alignment review

IP and domain reputation assessment

Sending platform architecture audit

Bounce, complaint, and engagement analysis by mailbox provider

Sender-level segmentation and risk ranking

Content and header evaluation

List hygiene and suppression review

Email & DNS Security Audit

You get a risk-rated findings report with prioritized recommendations.

We assess your domain's exposure to spoofing, impersonation, phishing, email interception, and DNS manipulation - showing you both the setup gaps and active abuse against your domain.

Tech detail

DNS zone integrity and record hygiene

DNSSEC, CAA, MTA-STS, TLS-RPT evaluation

DMARC/SPF/DKIM policy and alignment analysis

Dangling DNS and subdomain takeover risk

Typosquatting exposure

Browser security header review

Certificate issuance controls

Book a Call

Fix

Resolve the active crisis and rebuild a secure, deliverable foundation with hands-on remediation.

Email Deliverability Recovery

Your emails are landing in spam, your IP got blocklisted, or a provider is blocking you.  We diagnose the cause, execute the fix, and rebuild your sending reputation.

Recovery engagements frequently transition into Managed Deliverability once the immediate crisis is resolved.

Tech detail

Root cause analysis across IPs, domains, and sending streams

Blocklist delisting

Authentication and DNS remediation

Controlled IP/domain warmup

Provider-specific escalation

Sending behavior and segmentation correction

Weekly check-ins until metrics stabilize

Email & DNS Security Setup

We implement the full stack of email authentication, transport encryption, and DNS security controls your domain needs - from SPF and DKIM to DNSSEC and MTA-STS.

Scoped to your stack. We assess what you need during the discovery call and configure accordingly.

Tech detail

SPF, DKIM, DMARC configuration and enforcement

MTA-STS + TLS-RPT

DNSSEC signing

CAA records

Browser security headers (CSP, HSTS, COOP/COEP/CORP, Permissions-Policy)

Book a Call

Protect

Keep controls enforced and reputation healthy as your infrastructure, sending, and threats evolve.

Managed Email Deliverability

We actively manage your sender reputation, inbox placement, and email performance on an ongoing basis - so problems get caught before they cost you revenue.

Regular strategy sessions, infrastructure optimization, content and engagement guidance, reputation monitoring, list hygiene oversight, and custom reporting dashboards.

Most clients begin with an audit and transition to managed services after remediation is complete.

Tech detail

Weekly strategy calls

Google Postmaster, Microsoft SNDS, and RBL/DNSBL monitoring and delisting

Engagement segmentation and cadence tuning

Re-engagement and sunsetting oversight

Suppression sync

Provider-level escalations

Custom dashboards: inbox placement, reputation trajectories, provider-level performance

Ongoing Security Monitoring

After hardening is in place, we monitor your email authentication, DNS integrity, and platform security to ensure controls stay enforced as your infrastructure evolves.

Tech detail

Continuous SPF/DKIM/DMARC/
DNSSEC/MTA-STS/TLS-RPT/CAA monitoring

DMARC and TLS report analysis

DNS change detection

Cloudflare signal review

Monthly security posture report

Book a Call

Trusted by Hundreds of Businesses and Technology Providers

Our Clients See Real Results

70%+

open rates

(vs. 30% industry average)

15%+

conversion rates

for non-transactional emails

0.3%

spam complaint rates

(vs. 1.5% average)

Why Technical and Business Leaders Choose Us

We execute, not just advise

Hands-on implementation across your entire email stack 

Industry relationships

Direct access to email abuse, technical, and deliverability teams at major providers

Full-stack expertise

From DNS configuration to email service provider (ESP) migration to forensic analysis 

Proven at scale

Team includes former SendGrid Head of Deliverability who managed 20 billion monthly emails

Trusted by Growing & Well-Established Organizations

From fintech startups to government agencies, we protect organizations that can't afford email failures. Whether you're using Google Workspace, Microsoft 365, SendGrid, or custom SMTP stacks we build layered security that works with your existing infrastructure.

Latest Insights

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Email Security

Email Security & Deliverability That Actually Works

What We Do

Diagnose. Fix. Protect.

Diagnose

Email Deliverability Audit

Email & DNS Security Audit

Fix

Email Deliverability Recovery

Email & DNS Security Setup

Protect

Managed Email Deliverability

Ongoing Security Monitoring

Trusted by Hundreds of Businesses and Technology Providers

Our Clients See Real Results

Why Technical and Business Leaders Choose Us

Trusted by Growing & Well-Established Organizations

Latest Insights

I Registered the Domain in Cloudflare's DMARC Documentation. 18 Organizations Were Sending Real Reports to It.

When ESP Setup Instructions Break Your DMARC Protection

Hazy Hawk Hijacked Subdomains at MIT, Harvard, Stanford, and 30+ Other US Universities

Ready to stop playing defense with your email?