Rashedul Islam

Email Deliverability Expert | System Administrator

Hi, I'm Rashedul, a specialist with over 10 years of experience. I focus on email deliverability: helping businesses with cold email infrastructure and newsletter email blasts using custom SMTP servers to ensure maximum inbox placement.

The other half of my work is Linux system administration, covering cloud infrastructure, security hardening, monitoring, and performance optimization. The two go together: reliable deliverability is built on infrastructure you control, and I run both layers myself.

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Skills

Technical Expertise

Email Deliverability

95%

System Administration

90%

Cloud Infrastructure

88%

Database Management

85%

Specializations

What I Do

Cold Email Infrastructure & Deliverability

Newsletter Email Blasts with Custom SMTP

PowerMTA, Postal, Exim, Postfix Email Server Setup

Mailwizz, Mautic Email Marketing Systems

ESP Tuning (MailChimp, SendGrid, AWS SES)

SPF, DKIM, DMARC, rDNS Authentication

IP/Domain Blacklist Removal & Whitelist Services

IP Reputation Monitoring & Domain Warm-up

Linux Server Administration

Cloud Infrastructure & VPS Management

Server Monitoring, Backups & Recovery

Server Performance Optimization

Server Security & Hardening

Experience

Professional Journey

Email Deliverability Specialist

2024 - Present

Growtheffekt

Helping with cold email infrastructure setup, deliverability optimization, domain authentication, and inbox placement to maximize outreach results.

Founder & Email Deliverability Specialist

2022 - Present

Neumann & Associates

Helping with newsletter email blasts using custom SMTP servers, managing email infrastructure, and ensuring high deliverability for large-scale campaigns.

System Administrator

2015 - 2025

Upwork & Fiverr

Managed Linux servers, VPS hosting, and cloud infrastructure for clients worldwide: server setup, migrations, security hardening, and performance troubleshooting.