Mariusz Opalka — Expert Email Developer & Email Marketing Automation Specialist

Email Marketing Specialist

Sending emails but open rates keep dropping?

Effective email marketing is built on 3 key pillars:

Strategy

Right segments, optimal frequency, and compelling content that resonates with your audience.

Technology

Professional templates, automated flows, API integrations, and cross-client testing.

Deliverability

Proper domain configuration (SPF/DKIM/DMARC) to ensure emails reach the inbox, not spam.

I provide comprehensive email marketing services that combine strategic thinking, technical expertise, and proven deliverability practices to help your campaigns succeed.

Services

Email Marketing Solutions

From strategy and audits to technical deliverability setup, I offer comprehensive email marketing services tailored to your needs.

Email Strategy & Audit

Entry-level consulting

Perfect for companies that already send emails, but results aren't where they should be.

FOR WHOM:

Companies that 'already send something, but it doesn't work'

What's Included:

  • List structure audit
  • Segmentation analysis (openers/clickers/dormant)
  • Frequency and content review
  • SPF/DKIM/DMARC verification
  • Domain reputation check
  • Spam trap risk assessment
  • Strategic recommendations

Deliverables:

Detailed PDF report + 30-60 min consultation call

Email Templates (Design + Code)

Custom HTML email development

Responsive, dark-mode-ready email templates tested on 80-100 email clients.

What's Included:

  • Custom HTML email templates
  • Drag & drop modules (HubSpot/Mailchimp/Klaviyo)
  • Dark mode optimization
  • Mobile-first design approach
  • Cross-client testing (80-100 clients)

Premium Add-ons:

  • +Animated GIFs with fallbacks
  • +Dynamic personalization
  • +Transactional + marketing versions

Marketing Automation / Flows

Behavior-based email sequences

Automated email flows that respond to user behavior and drive engagement.

What's Included:

  • Welcome sequences
  • Lead nurturing campaigns
  • Re-engagement flows
  • Post-purchase/onboarding
  • Event-based triggers
  • Content-based automation

Supported Platforms:

MailchimpKlaviyoHubSpotActiveCampaignSalesforcePardotMarketoand more
Secret Weapon

Deliverability & Domain Setup

The Secret Weapon

Technical configuration that ensures your emails actually reach the inbox.

What's Included:

  • Domain configuration & setup
  • SPF/DKIM (2048-bit)/DMARC implementation
  • Domain warm-up strategy
  • Spam issue resolution
  • Bounce rate monitoring
  • Throttling diagnostics

Premium Add-ons:

  • +Deliverability rescue for campaigns going to spam

Advanced Segmentation & Data

For sophisticated clients

Deep segmentation logic and list hygiene for maximizing engagement and deliverability.

What's Included:

  • Clickers vs Openers analysis
  • Soft inactive identification
  • Dormant/Sleeping bears strategy
  • Behavior-based logic
  • Safe list cleanup procedures

Integrations & Custom Tech

Beyond 'Canva email marketers'

Technical integrations that connect your email marketing to your entire tech stack.

What's Included:

  • API integrations (Python/n8n)
  • Google Sheets automation
  • BigQuery connections
  • CRM synchronization
  • Webhook implementations
  • Custom alerts (Slack, Email)

Why Work With Me

Experience That Delivers Results

I bring a unique combination of strategic thinking, technical expertise, and real-world experience to every project.

15+ Years Experience

Over a decade and a half of email marketing expertise across 100+ industries and thousands of campaigns.

Testing on 100 Email Clients

Every template rigorously tested across major email clients for perfect rendering and compatibility.

Technical Approach

API integrations, Python automation, custom workflows—not just drag-and-drop builders.

Not 'Mass Blasting'

Strategic, behavior-based campaigns that respect your audience and maximize engagement.

MSc Marketing and Management

Academic foundation in marketing principles combined with hands-on technical execution and real-world expertise.

Ready to Boost Your Email Marketing?

Let's discuss how I can help improve your email campaigns, deliverability, and overall strategy.

I typically respond within 24 hours. Let's make your email campaigns more effective.