Md Probal R.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Oct 20, 2026.

# Email Deliverability Expert | Inbox Placement | IP Warming | Agentic AI Are your marketing emails landing in Spam, Promotions or Junk instead of reaching subscribers' inboxes? Experiencing poor deliverability, declining sender reputation or problems with your SMTP infrastructure? I help email marketers, businesses and agencies troubleshoot email delivery problems, improve inbox placement, manage sender reputation and build reliable email sending infrastructure. With over **12 years of international IT experience**, including 6 years and 8 months in Singapore and 5 years and 10 months in Bangladesh, I bring extensive hands-on expertise in email deliverability, email marketing platforms, SMTP systems, network security and Linux/Unix administration. ## EMAIL DELIVERABILITY & INBOX PLACEMENT - Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, AOL and iCloud delivery troubleshooting. - Inbox placement analysis and spam filtering investigation. - Gmail Primary, Promotions and Spam folder analysis. - Outlook Junk and Focused Inbox delivery investigation. - Sender, domain and IP reputation analysis. - Bounce, deferral, rejection and SMTP delivery troubleshooting. - Email deliverability audits and optimization. ## DEDICATED IP & DOMAIN WARMING - Dedicated IP, new domain and subdomain warming. - IP warming strategy, sending schedules and volume optimization. - ISP-specific sending volume management. - Sender reputation monitoring and improvement. - IP blacklist investigation and remediation. - Sending infrastructure assessment and optimization. ## EMAIL AUTHENTICATION & SMTP - SPF, DKIM and DMARC configuration and troubleshooting. - Reverse DNS (PTR), HELO/EHLO and MX records. - SMTP authentication, relay and TLS configuration. - DNS and domain alignment analysis. - Email headers, SMTP response codes and mail flow investigation. ## EMAIL MARKETING PLATFORMS & MTA **Platforms:** SendGrid, Amazon SES, Mailchimp, JangoMail, Google Workspace and Microsoft 365. **Mail Transfer Agents:** PowerMTA, Postfix, Exim and Linux-based SMTP servers. Services include SMTP configuration, MTA troubleshooting, queue management, delivery log analysis, performance optimization and bulk email infrastructure support. ## EMAIL MONITORING & ANALYSIS - GlockApps inbox placement and seed-list testing. - MXToolbox DNS, blacklist and email health checks. - Email header and authentication analysis. - IP/domain reputation investigation. - Delivery performance analysis and corrective recommendations. ## AGENTIC AI, RAG & AUTOMATION I have also been actively involved in designing and developing autonomous AI platforms and multi-agent automation environments. My technical work includes: - OpenClaw-based autonomous AI agent platforms. - Multi-agent architecture, coordination and orchestration. - Retrieval-Augmented Generation (RAG) and knowledge retrieval. - Event-driven agent execution and task orchestration. - PostgreSQL, Redis, Docker and Linux infrastructure. - AI-powered business process automation and system integration. My focus is on practical AI implementations that automate operational tasks and solve real business problems. ## NETWORK, FIREWALL & SYSTEMS ENGINEERING My broader infrastructure background enables me to troubleshoot: - Cisco Routers/Switches, Juniper, Fortinet and Check Point. - Cisco ASA, SonicWall, Juniper SRX and IPtables firewalls. - Linux/Unix: Red Hat, Debian, SUSE, CentOS, Ubuntu and BSD. - Windows Server administration. - XMPP messaging and SIP/VoIP infrastructure. - Nagios, Opsview, SolarWinds, Cacti and other monitoring platforms. - Server administration, network troubleshooting and security optimization. ## INDUSTRY EXPERIENCE Telecommunications (VoIP/SMS), Email Marketing, Network & Security Solution Providers, Managed Services Providers, Banking and Enterprise IT Operations. ## WHY WORK WITH ME? Email deliverability involves much more than sending campaigns through a marketing platform. It requires understanding mailbox provider filtering, sender reputation, authentication, IP behavior, sending patterns and underlying SMTP infrastructure. My extensive engineering background allows me to investigate problems beyond surface-level symptoms. I focus on root-cause analysis, practical recommendations and sustainable solutions rather than generic advice or unrealistic inbox placement guarantees. Whether you need IP warming, Gmail or Outlook inbox placement troubleshooting, SMTP/MTA configuration, email marketing infrastructure support, AI automation or complex technical problem resolution, I bring a hands-on, analytical and results-driven approach. **Let's discuss your requirements and find the right technical solution for your business.**