Most email problems aren't content problems. They're system problems. I fix the infrastructure, list hygiene, and sending behaviour that determines whether your campaigns reach inboxes — or don't.
Deliverability failures have a root cause. Most tools diagnose symptoms. I trace problems to the layer where they actually originate — infrastructure, list health, content structure, or sending behaviour.
SPF, DKIM, DMARC, domain age, IP reputation, and warmup protocols. If the foundation is wrong, nothing else fixes it.
Bounce rates, invalid addresses, low-engagement segments, and acquisition method. A dirty list will kill a clean infrastructure.
Image-to-text ratio, HTML quality, rendering across 90+ clients including Outlook, and spam trigger patterns.
Volume consistency, send cadence, segmentation by engagement tier, and stagger scheduling for large lists.
Real systems, real constraints. These aren't use-case templates — they're actual problems that required building something that didn't exist yet.
The client needed a unique scannable barcode in every single email sent to one million recipients. No native Mailchimp feature supports this. I designed a generation and merge system that produced unique barcodes at scale, embedded correctly in every recipient's email, without breaking deliverability or rendering across clients.
Large-volume sends without a structured stagger schedule burn sender reputation fast. I built a segmented sending system that distributed volume across time windows based on engagement tiers — protecting IP reputation while maintaining consistent delivery performance across the full list.
Heavy asset campaigns fail in predictable ways — slow load times, image blocking, spam scoring from hosted links. I architected the asset hosting and referencing structure so that 12GB+ of campaign assets loaded correctly, quickly, and without triggering content filters.
Not every email problem needs infrastructure-level work. But some do. Here's how to tell the difference.
1,000+ satisfied clients on Fiverr. A selection of what clients have said about specific projects.
"Syed did an OUTSTANDING job with my email marketing project. His professionalism, attention to detail, and ability to exceed expectations truly impressed me. Working with him was a breeze thanks to his proactive communication and excellent cooperation — highly recommended."
"Syed was absolutely brilliant. His professionalism, attention to detail, and proactive communication made the process seamless. He truly went the extra mile with my Mailchimp campaign, using his expertise and creativity to deliver beyond expectations — I can't wait to work with him again."
"Working with Syed in email marketing was an exceptional experience. His keen attention to detail and professionalism truly set his work apart. Not only did he exhibit great design aesthetics, but his cooperation and politeness made the collaboration seamless."
"Syed is a great partner. Happy to continue to work with him long term on our corporate email program."
"Syed demonstrated exceptional skill, dedication, and problem-solving capabilities in successfully executing a series of highly technical and time-sensitive tasks related to email template migration from Mailchimp to Brevo and functionality."
"Wonderful communication, solved my difficult problems with Mailchimp. Writes creative emails, very polite and well-spoken. Set up my journey and automation perfectly. Will definitely hire again."
Every project follows the same 5-step diagnostic sequence. I don't start with templates or campaigns — I start with infrastructure and work outward.
DNS records, authentication, list composition, bounce history, sending patterns. No assumptions. Everything gets checked against real data.
Most deliverability problems have one root cause. I find it — infrastructure, list, content, or behaviour — before touching anything.
Infrastructure before content. List hygiene before volume changes. The sequence matters. Fixing in the wrong order wastes time and creates new problems.
Litmus for rendering. Seed testing for placement. Spam scoring before every send. "Looks fine" is not a testing standard.
Every system I build gets documented. You should know exactly how it works — not depend on me to run it.
Mailchimp, Brevo, SendGrid, GoHighLevel — and the infrastructure beneath them. The platform changes. The system design, SPF/DKIM/DMARC setup, automation logic, and HTML template standards don't.
All engagements start with a diagnostic. Scope and pricing follow from what's actually broken — not from a fixed menu.
Full diagnosis across infrastructure, list health, content, and sending behaviour. Root cause identified, fix priority listed.
SPF, DKIM, and DMARC configured correctly. Not just set — verified passing and documented.
Flows designed around system logic, not campaign habits. Segmentation, triggers, and timing built to hold at scale.
Hand-coded and tested across 90+ email clients. Outlook-compatible. No drag-and-drop shortcuts.
Validation, bounce removal, re-engagement sequencing, and engagement-tier segmentation for large lists.
Structured moves between ESPs without reputation loss. List integrity maintained throughout.
Answers to what most clients ask before getting started.
Usually one of four reasons: broken or missing SPF/DKIM/DMARC, a list with too many invalid addresses or low-engagement contacts, HTML content with poor image-to-text ratio, or irregular sending volume. A proper diagnosis identifies the root cause before touching anything.
SPF specifies which servers can send on behalf of your domain. DKIM adds a cryptographic signature that receiving servers verify. DMARC tells those servers what to do when a message fails either check. All three need to be configured correctly in DNS and verified passing — not just present.
A verified expert listed in the official Mailchimp Expert Directory. Pro Partners have demonstrated advanced competency across campaigns, automation, segmentation, and integrations. I hold Pro Partner status alongside three separate Mailchimp certifications.
Yes. Brevo, SendGrid, and GoHighLevel are all platforms I work with regularly. The infrastructure and system design principles transfer across all of them. Platform choice matters less than how the system is built on top of it.
Drag-and-drop builders generate bloated markup that breaks in specific clients — particularly Outlook. Hand-coded HTML templates are built to a specific rendering standard, tested across 90+ email clients with tools like Litmus, and produce consistent results regardless of the recipient's mail client.
All engagements start with a diagnostic. Scope and pricing follow from what's actually broken — not a fixed menu. Deliverability audits are flat-rate and delivered within 5 business days. The first conversation is free — no pitch, just diagnosis.
Infrastructure fixes like SPF, DKIM, and DMARC setup typically take 1–3 days. List hygiene depends on list size but most projects complete within 3–5 days. Sender reputation recovery after blacklisting takes 2–6 weeks depending on sending volume and ISP.
Email list hygiene is the process of removing invalid addresses, hard bounces, spam trap addresses, and low-engagement contacts from your sending list. A dirty list — even a small percentage — raises bounce rates, triggers spam filters, and damages sender reputation over time.
Litmus for rendering across 90+ clients, seed testing for inbox placement, MXToolbox for DNS verification, and Google Postmaster Tools for sender reputation monitoring. Spam scoring runs before every send. "Looks fine" is not a testing standard.
IP warmup is the process of gradually increasing sending volume from a new or dormant IP to build a positive reputation with ISPs. It is needed when switching to a dedicated IP, after a long sending pause, or when migrating to a new ESP. Skipping warmup on high volume is one of the most common causes of deliverability collapse.
Yes. Gmail and Outlook blocks are usually caused by reputation issues — high bounce rates, missing authentication, spam complaints, or blacklisting. The fix starts with a full audit to identify which layer is causing the block, then infrastructure repair, list cleaning, and controlled re-engagement.
Syed Raiyan is an email deliverability expert and Mailchimp Pro Partner based in the UK, with 18+ years of experience in email infrastructure, network engineering, and system architecture. He approaches email the way most people approach infrastructure: focused on what breaks, and more importantly, how to prevent it.
He holds three Mailchimp certifications (Foundation, Email Marketing, Automation), Brevo certification, and a Computing and Information Systems degree from London Metropolitan University. He founded Amader Electronics, a community-driven DIY electronics learning platform in Bangladesh.
On Fiverr, Syed Raiyan is a Top Rated Seller with 383+ five-star reviews — earned by solving problems other specialists couldn't, including generating one million unique barcodes via Mailchimp and managing 70,000+ contact systems with zero reputation loss.
Specialisations: Email deliverability audits · SPF/DKIM/DMARC setup · Email infrastructure · List hygiene and segmentation · Custom HTML email templates · Email automation · Platform migration · IP warmup · Sender reputation recovery.
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If your campaigns are landing in spam, your bounce rate is climbing, or you're setting up a new sending infrastructure — that's where I start. Not with templates. With diagnosis.
First conversation is free. No pitch — just diagnosis.