Cold Email Specialist | Expert Instantly AI, Apollo, PowerMTA, Klaviyo
Cold Email Infrastructure & Deliverability

Scaling B2B Outreach with 100% Inbox Placement & Custom Infrastructure

Seasoned Email Marketing and Deliverability Specialist with 8+ years of hands-on expertise building high-volume PowerMTA setups, Instantly AI campaigns, lead verification, and ESP domain warmup.

Infrastructure Health Monitor
LIVE ACTIVE
Inbox Placement Rate
99.8% Optimal
Domain Reputation
100/100 Clean
Daily Capacity
150K+ Scaled
DNS & Authentication Protocols
SPF Record ✓ PASS
DKIM 2048-bit ✓ PASS
DMARC Strict ✓ PASS
Deliverability Trend (30 Days) +24% Open Rate
DKIM Rotation
Automated
Spam Trap Filter
0 Traps
IP Score
99 / 100
Mainuzzaman Photo

Mainuzzaman

Cold Email Specialist & Deliverability Expert

Growth Focused Email Infrastructure Specialist

I am a seasoned Email Marketing and Response Handling professional with over 8 years of extensive experience, dedicated to assisting businesses in achieving remarkable growth through strategic cold email marketing initiatives.

With a proven track record, I have successfully supported more than 500 individual clients and collaborated with 300+ companies to optimize their email outreach, fix deliverability bottlenecks, setup virtual MTAs, and scale revenue funnels.

8+
Years of Experience
Dedicated to cold email outreach & deliverability engineering since 2016.
500+
Individual Clients Supported
Helping founders, agencies, and sales teams achieve 99%+ inbox placement.
300+
Companies Collaborated
Trusted partner for global B2B companies, marketing firms, and SaaS brands.

Key Expertise

Comprehensive cold email setup, high-volume MTA configuration, funnel automation, and deliverability solutions.

⚙️

High-Volume Mail Handling (MTA) Setup

Specialized in setting up robust, high-volume mail transfer agents engineered for maximum deliverability and throughput.

PowerMTA Configuration
MailerQ Setup
Virtual MTA & Rotation
🔄

Automation Funnel Development

Designing automated lead nurturing and e-commerce workflows that convert cold leads into high-ticket sales opportunities.

GoHighLevel Workflows
Klaviyo E-commerce Sequences
Lead Nurturing Funnels
🛡️

Domain Authentication & Protocol Setup

Full DNS authentication compliance ensuring your sending domain passes all security checks by Google, Outlook, and Yahoo.

SPF & DKIM Records
DMARC Policy Enforcement
Google Postmaster Setup
📈

Domain Warm-up & Reputation Repair

Proven warm-up protocols to establish pristine sender reputation and recover domains currently trapped in spam folders.

Automated Warmup Sequences
Blacklist Delisting & Recovery
IP Reputation Monitoring
🚀

Cold Emailing Mastery

End-to-end setup and strategy for cold outreach tools to maximize open rates, reply rates, and meeting bookings.

Instantly.ai Setup
Smartlead.ai Integration
Email List Segmentation
🔧

ESP Troubleshooting & Audit

Comprehensive technical audits across all major Email Service Providers to resolve deliverability issues and spam triggers.

SendGrid & Mailgun Audit
Amazon SES Configuration
Mailchimp & ActiveCampaign
🧹

Email List Optimization & Scrubbing

Conduct thorough email list verification to enhance engagement, removing inactive contacts, reducing bounce rates, and preserving domain score.

Spam Trap & Hard Bounce Removal
Inactive Lead Scrubbing
Real-time API Verification
17+ Supported Platforms & Technologies
Instantly.ai
🚀 Apollo.io
✉️ PowerMTA
📩 Klaviyo
🎯 GoHighLevel
🌐 Google Workspace
💻 Microsoft 365
🛡️ Cloudflare
📊 SendGrid
🏹 Mailgun
☁️ Amazon SES
📬 MailerQ
🐒 Mailchimp
ActiveCampaign
🔍 MillionVerifier
🧹 ZeroBounce
📊 Google Postmaster

Live Campaign Results & Deliverability Audits

Click any screenshot below to inspect full-size proof of results across Instantly, Mail-Tester, SendGrid, and Mailchimp.

Instantly AI Campaign Responses - High Open & Reply Rate

Instantly AI Campaign Responses

High-volume cold outreach campaign reaching 90%+ inbox placement with multi-account rotation.

Mail-Tester 10/10 Inbox Score - Perfect DNS Authentication

Mail-Tester 10/10 Inbox Score

Flawless DNS authentication setup (SPF, DKIM, DMARC, reverse PTR) achieving 10/10 score.

SendGrid Domain Authentication & High Reputation Score

SendGrid Domain Authentication

Full domain authentication setup on SendGrid with dedicated IP warmup and zero spam reports.

Mailchimp E-commerce Campaign - High Open & Click Rates

Mailchimp Campaign Analytics

E-commerce email sequence optimization yielding 45%+ open rates and direct sales growth.

Klaviyo Automated Sequence Optimization

Klaviyo Sequence Optimization

Flow automation for abandoned cart, welcome series, and customer win-back campaigns.

PowerMTA Server & Virtual MTA Rotation Setup

PowerMTA Server Setup

Custom Linux server installation with virtual MTA rotation for high-volume corporate sending.

Frequently Asked Questions

Everything you need to know about cold email setups, deliverability repairs, and MTA configurations.

What is PowerMTA and why do I need it for cold emailing?
PowerMTA (Power Mail Transfer Agent) is enterprise-grade email delivery software designed for high-volume senders. It allows you to control sending rates, rotate IP addresses, manage Virtual MTAs, and maintain strict compliance to ensure maximum inbox placement.
How long does domain authentication (SPF, DKIM, DMARC) take?
DNS record configuration takes less than 24 hours to propagate globally. Once set up, your emails immediately pass security checks by Gmail, Outlook, and Yahoo, establishing trust with receiving servers.
How do you fix emails going to the Spam folder?
I perform a comprehensive deliverability audit: checking DNS records, evaluating content for spam trigger words, analyzing IP/domain reputation on Google Postmaster, scrubbing bad email leads, and implementing gradual warmup protocols to rebuild domain trust.
Can you integrate Instantly.ai or Smartlead with custom domains?
Yes, I specialize in configuring multi-domain cold outreach setups on Instantly.ai and Smartlead.ai, including custom tracking domains, warm-up schedules, and API integrations with Google Workspace or Microsoft 365.
Do you offer ongoing email list cleaning and verification?
Yes! I scrub email lists using tools like MillionVerifier and ZeroBounce to remove hard bounces, spam traps, and catch-all emails, protecting your domain score before you launch cold campaigns.
How can we start working together?
Simply fill out the booking form below or click “Book a Free Consultation”. I will review your requirements and send a customized proposal within 24 hours to immainuzzaman@gmail.com.

Ready to Solve Your Deliverability Bottlenecks?

Book a free technical consultation with Mainuzzaman. Let’s discuss your current infrastructure, spam issues, or cold email scaling targets.

Direct response to your email within 24 hours
100% confidential technical infrastructure audit
Custom roadmap for PowerMTA, Instantly, or Klaviyo