Cold email infrastructure & deliverability

Your cold email should land in the inbox. I build the infrastructure that gets it there.

Sending domains, SPF / DKIM / DMARC authentication, Google Workspace & Microsoft 365 mailboxes, warmup and ongoing deliverability management — designed, deployed and monitored by one specialist who lives in this stack every day.

Google Workspace Silver Partner · 100+ clients · 200k+ inboxes set up · millions of cold emails delivered

What I do

What I can help with

No fixed packages, no tiers. Every engagement is scoped to your sending volume, your offer and your timeline. Here's what I handle, in short. Each one has its own page with the detail. No fixed packages — every job is priced on your situation.

Setup

Cold email setup

Cold email should never run on your main domain. I build the whole sending setup separately — domains that point back to your real site, all the settings Gmail and Outlook check, and inboxes on Google Workspace or Microsoft 365. Warmed up and tested with a real email before you contact anyone.

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Diagnose

Fix emails going to spam

Replies dried up and nobody can tell you why. I find the actual cause instead of changing five things and hoping — checking every setting, reading a real email that landed badly, and getting you off any blocklist that genuinely matters. You get it in writing.

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Authentication

Email authentication setup

Three settings prove an email is really from you, and Gmail and Outlook now reject mail that fails them. I set up SPF, DKIM and DMARC properly on every domain you send from, then confirm it works against an email I actually send rather than trusting a green tick.

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Inboxes

Google Workspace & Microsoft 365

As a Google Workspace Silver Partner I can sell you Google licences for less than Google charges directly. Accounts arrive built like real people's — name, photo, signature, two-factor and recovery — connected to your sending tool and tested. Microsoft 365 pools too.

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Migration

Move domains or email

Changing registrar, DNS or email provider without losing a day of mail. Everything is prepared and checked while the old setup is still running, the switch itself takes minutes, and nothing gets retired until a real message has been sent and read.

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Monitoring

Keep an eye on it

Settings get edited, certificates expire, domains get listed. Monthly checks across every domain you send from, so you hear about a problem before your clients do — with removals filed and fixes made rather than just reported.

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Campaigns

Campaign setup & running

The day-to-day work above the technical setup: Instantly and Smartlead configured properly, lists cleaned before they're used, sending spread across the day, replies routed so nothing gets missed, and unsubscribes handled the way the law requires.

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Data

B2B lead data & enrichment

Need the list as well? Through my agency Rooster4am I supply verified B2B lead data — Apollo exports, LinkedIn Sales Navigator sourcing, and enrichment across 8+ providers for the best possible coverage of valid emails and direct dials.

How it works

From zero to sending, cleanly

A sending stack is a sequence — each stage protects the next. This is the order every build follows.

01 · scope

Plan the stack

Volume targets, ESP mix, domain count, naming families and timeline — scoped to your campaign, not a template.

02 · build

Domains & DNS

Register domains, create zones, set redirects, configure SPF, DKIM, DMARC, MX and tracking domains. Verified, not assumed.

03 · provision

Mailboxes

Workspace or Microsoft 365 tenants created and configured, mailboxes bulk-provisioned and connected to your sending tool.

04 · run

Warm & manage

Warmup to launch readiness, then continuous placement monitoring, capacity management and domain rotation.

About

Toukir Ahmed

I'm a cold email infrastructure specialist and Google Workspace Silver Partner based in Rangpur, Bangladesh, working with agencies and founders worldwide. My day-to-day is the unglamorous machinery of outbound: DNS records, mailbox tenants, warmup curves, placement tests.

Over the last few years I've worked with 100+ clients, set up hundreds of thousands of cold email accounts, and helped send millions of cold emails. I currently manage 400+ sending domains across Google Workspace, Microsoft 365 and Azure pools, and I build my own tooling — DNS audit tools, bulk Cloudflare automation, account status checkers — because at this scale, clicking through dashboards doesn't cut it.

If your reply rate died and nobody can tell you why, or you're about to scale outbound and want it built right the first time — that's exactly the work I do.

Focus
Cold email infrastructure & deliverability
Partner status
Google Workspace Silver Partner (reseller)
Track record
100+ clients · millions of cold emails sent
Inboxes provisioned
Hundreds of thousands of cold email accounts
Under management
400+ sending domains, multi-ESP
Also runs
Rooster4am — B2B lead data & enrichment
Works with
Agencies, founders & sales teams worldwide
Get in touch

Let's talk about your sending stack

No forms here. Email me, message me on WhatsApp, or pick a time on my calendar — whichever is easiest for you. I reply personally.

Emailtoukir@toukirahmed.com WhatsAppFastest for quick questions LinkedInConnect professionally X / TwitterNotes from the sending trenches
availability — US Eastern time
MON – THUOpen for calls
FRILimited slots
SAT – SUNAsync only

All times US Eastern (ET). Pick a slot on the booking page and a Google Meet invite lands in your inbox straight away — or email or WhatsApp me a couple of times that suit you.

Pick a time on my calendar
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