We are finally getting real conversations and real downloads. Advazon built a cold email engine that reached 20,000+ attorneys with an 86% average open rate.
Rakibul Haque · B2B Lead Generation & Email Deliverability
We started Advazon because we kept watching businesses get sold the same broken promise: send more emails, hire more SDRs, buy a bigger list. Almost nobody talked about whether the emails were even landing in the first place.
The short version: I got tired of watching good products fail because nobody fixed the infrastructure underneath them.
I got into B2B lead generation in 2017, doing list-building work for small clients on Upwork. Back then I thought the job was simple: find the right people, write a good message, send it. I was wrong about which part actually mattered.
Over the next two years, I watched the same pattern play out with client after client. They'd write great copy. They'd build a solid list. They'd hit send. And almost nothing would happen. Open rates near zero. Replies that never came. Everyone blamed the message. Almost nobody checked whether the email ever reached the inbox at all.
"I stopped asking clients what their open rate was. I started asking whether their domain had ever been checked for a blacklist."
That shift changed everything about how I worked. I started digging into SPF records, DKIM signatures, DMARC policies, and warmup protocols, not because it was glamorous, but because it was the actual problem nobody was solving. Most freelancers and agencies were optimizing subject lines while their client's domain was quietly burning.
By 2021, I wasn't just building lead lists anymore. I was rebuilding entire outbound systems from the ground up, infrastructure first, copy second. Clients started seeing the difference immediately. Not because the messaging got smarter, but because the emails finally arrived.
I founded Advazon in 2023 to do this work properly, for companies that wanted a real system instead of another freelancer who'd disappear in three months. The mission hasn't changed since: build the infrastructure right, then everything else gets easier.
Every step added a layer to what Advazon does today.
Began doing list-building and outreach for small clients. Learned fast that a good list means nothing if the emails never land.
Started specializing in domain authentication, warmup, and inbox placement after seeing infrastructure, not copy, was the real bottleneck.
Added LinkedIn outreach, CRM automation, and multi-domain campaign builds. Started taking on larger, more technical engagements.
Formalized everything under one brand. Built a process that scales without losing the direct, no-disappearing-act relationship clients actually want.
Working primarily with SaaS companies, agencies, and B2B teams across the United States, with additional clients in the UK and Australia. Still doing the audit calls myself.
Here's what the numbers and the reviews actually say.
Ranked in the top 3% of freelancers on the platform, with a 99% Job Success Score maintained across seven years of active client work.
A 5.0 rating across every completed order in B2B lead generation and cold email deliverability work.
Real recommendations from founders, agency owners, and enterprise clients, including a Chief of Staff at LinkedIn and a Forbes 30 Under 30 CEO.
"He built a cold email engine that reached over 20,000 attorneys with an 86% average open rate. The infrastructure work alone justified the engagement."
"Inbox placement went from around 40% to over 94%, and reply rates jumped to 8.4%. He knows email deliverability better than anyone we've worked with."
"His strategic approach to building contact lists for our drip campaigns significantly boosted our results. I was genuinely impressed by the execution."
Book a free 30-minute audit. You'll talk directly with me, not a sales rep, and you'll walk away knowing exactly what's working and what isn't.
WE RESPOND WITHIN 24 HOURS · NO LONG-TERM CONTRACT · NDA AVAILABLE