It's your infrastructure. I fix broken email deliverability, restore sender reputation, and build outbound systems that scale reliably. 9+ years. Certified expert in Instantly, Smartlead, Apollo & HubSpot.
No account managers, no junior handoffs, no copy-paste playbooks. Every ROBAITEC specialist is a Top Rated Upwork freelancer with proven earnings and verified client results — and you work with them directly.
Email Infrastructure Engineer
Islamabad, Pakistan
Cold Email Deliverability Expert
Dubai, UAE • Islamabad, Pakistan
Outbound Campaign Strategist
Islamabad, Pakistan
Apollo.io, HubSpot, Instantly, Smartlead, and more. Not just platform-aware. Actually certified and hands-on inside each one.
Every specialist is Top Rated with verified earnings in the thousands, public reviews, and a track record you can check yourself.
Fix your foundation before scaling. Domain reputation, authentication, warm-up, then campaigns. The right way.
No middlemen. No handoffs. You work directly with the specialist who's solved these problems for hundreds of companies.
Real results from clients who fixed their deliverability
The infrastructure problems killing your reply rates
Gmail sees you as spam before reading your first email. Domain warming, proper authentication (SPF/DKIM/DMARC), and strategic send patterns fix this.
Missing or misconfigured SPF/DKIM/DMARC records. ISPs reject your mail instantly. Proper setup = emails actually reach inboxes.
Ramping volume too quickly triggers spam filters. Strategic warmup + gradual scaling = consistent delivery instead of blacklisting.
Bad data = high bounce rates = damaged reputation. Verification + list cleaning + proper enrichment keeps domain health strong.
Wrong content, HTML, or sending patterns trigger filters. Proper setup + A/B testing + format optimization required.
Accounts need warming before campaigns. Inbox warmup through reply engagement builds credibility and improves deliverability.
Your infrastructure, built in six verified layers. Follow the path — each step feeds the next, and nothing goes live until the layer beneath it is proven. This is the discipline most outbound systems skip.
A full forensic teardown before anything is touched. DNS authentication, domain reputation, blacklist status, list quality, sending patterns — we find exactly what's broken and what it costs you.
Where most failTeams jump straight to sending more volume without ever diagnosing why the current volume isn't landing.
Every contact passes a multi-stage verification waterfall — syntax check, SMTP verification, catch-all scoring, spam-trap crosscheck. Nothing unverified ever enters a live campaign.
Where most failBad data treated as good data. Every bounce tells Gmail and Outlook you're not a legitimate sender — and most teams have no gate to catch it.
A secondary domain portfolio is configured so your primary domain is never at risk. Full SPF/DKIM/DMARC/BIMI authentication, custom tracking domains isolated per sending domain.
Where most failCold email sent from the primary corporate domain with zero authentication — the fastest way to burn deliverability for the whole company.
Strategic warm-up sequencing across every mailbox. Volume ramps by warm-up maturity — never a flat number — with reputation monitored daily inside Instantly, Smartlead, Apollo or your ESP.
Where most failRamping to full volume in week one. The platforms allow it — and your sender reputation collapses inside two weeks.
Multi-touch sequences built inside your platform, mailbox rotation configured across the domain portfolio, volume throttled to maturity, and continuous A/B testing on copy, timing and targeting.
Where most failOne mailbox, one cadence, no rotation — built for volume, not survivability. The platform won't protect you from yourself.
Qualified replies route to your team while deliverability is monitored continuously — blacklist defense, sender reputation protection, and monthly reporting. The system keeps running clean as you scale.
Where most failSet-and-forget. Deliverability decays silently, and nobody notices until replies flatline.
When every layer underneath is verified, the system stops leaking and starts compounding. This is what a correctly built outbound engine produces:
Pick the platform you run on. Pricing is scoped to your domain portfolio and team size on a short discovery call.
A full forensic teardown of your Instantly sending infrastructure. You'll find out exactly where your budget is leaking and what's putting your domains at risk.
A ground-up build of your Instantly outbound infrastructure, built to scale without triggering reputation collapse.
Done-for-you growth infrastructure inside Instantly. A dedicated technical operator defending your sending health every month.
A full forensic teardown of your Smartlead sending infrastructure. You'll find out exactly where your budget is leaking and what's putting your domains at risk.
A ground-up build of your Smartlead outbound infrastructure, built to scale without triggering reputation collapse.
Done-for-you growth infrastructure inside Smartlead. A dedicated technical operator defending your sending health every month.
A full forensic teardown of your Apollo sending infrastructure. You'll find out exactly where your budget is leaking and what's putting your domain at risk.
A ground-up build of your Apollo outbound infrastructure, built to scale without triggering reputation collapse.
Done-for-you growth infrastructure inside Apollo. A dedicated technical operator defending your sending health every month.
A full forensic teardown of your HubSpot sending infrastructure. You'll find out exactly where your budget is leaking and what's putting your domain at risk.
A ground-up build of your HubSpot sending and lifecycle infrastructure, built to scale without triggering reputation collapse.
Done-for-you growth infrastructure inside HubSpot. A dedicated technical operator defending your sending health every month.
A full forensic teardown of your high-volume sending stack across SparkPost, SendGrid or Mailgun. Find out exactly what's throttling your throughput and burning your IPs.
A ground-up build of your high-volume sending infrastructure on SparkPost, SendGrid or Mailgun APIs — all on dedicated IPs, built to scale into the millions.
Done-for-you management of your dedicated IP sending infrastructure. A technical operator defending your reputation at volume, every month.
That's exactly what the first call is for. Tell me where you are — your volume, your goals, your current stack (or no stack at all) — and I'll architect the right platform mix and infrastructure for your business. No guesswork, no overbuying tools you don't need.
Discovery call (15–20 min) — we map your goals, volume and current setup.
Platform recommendation — Instantly, Smartlead, Apollo, HubSpot, dedicated IPs, or a hybrid. Whatever actually fits.
Custom architecture & quote — a written plan scoped to your exact needs, with clear pricing.
Free consultation · No commitment · Honest platform advice
Running more than one platform? Instantly, Smartlead, Apollo, HubSpot — mention your stack on the call and I'll scope the sync as well. Pricing is always provided after a scoping call, never from a rate card.
Problem → Solution → Result. Actual outcomes from recent projects, with the exact tools that delivered them.
Only 19% of emails reached the inbox. Domain reputation was flagged, campaigns were dying in spam, and outbound had effectively stopped producing pipeline.
Rebuilt the domain portfolio from scratch — full SPF/DKIM/DMARC authentication, strategic warm-up sequencing, and volume throttled to reputation maturity.
19% → 98% inbox placement in 3 weeks. Domain reputation restored. Now sending 5,000+ daily with zero issues.
Client campaigns were bouncing hard and opens had collapsed. Dirty lists and broken authentication were quietly burning every domain the agency touched.
List quality rebuilt with a full verification waterfall, authentication fixed across every sending domain, and a managed warm-up program implemented per mailbox.
60–70%+ open rates with <1% bounce. Clients getting consistent replies, campaign after campaign.
A good list producing almost nothing — 8 meetings booked despite steady sending. The infrastructure and campaign structure were throttling every send.
Infrastructure optimization end-to-end, plus systematic campaign A/B testing on copy, timing and targeting — with mailbox rotation spreading the load.
8 → 120+ meetings booked. Same list, 15× more meetings. Nothing changed except the system underneath.
Bounce rates were poisoning sender reputation and transactional volume kept getting throttled. Every scaling attempt made deliverability worse.
Full list verification, clean domain setup, and SendGrid optimization on dedicated IPs — with suppression lists and feedback loops configured properly.
<1% bounce rate, sustained. Consistent 2,000+/day sending without issues.
The founder needed podcast guest spots to build authority — but generic mass pitches were being ignored, and hosts could smell the template from the subject line.
Built a curated list of 220+ topic-matched shows, added per-host personalization references and episode-fit angles, and ran a 4-touch human-sounding sequence.
25+ interviews booked from one campaign. Warm host replies, repeat invitations, and a booking pipeline that keeps refilling.
Client-acquisition emails landing in spam, candidate outreach ignored, and one overworked mailbox carrying the entire agency's sending volume.
Multi-inbox rotation on fresh secondary domains, full list verification, and persona-split sequences — one track for hiring managers, one for candidates.
3× more client meetings with 65%+ open rates. Placements up, domains clean, sending sustainable.
Mass blasts to seller and investor lists had burned two domains already. Responses had flatlined and every new campaign made the reputation damage worse.
Fresh secondary-domain portfolio, scrubbed and verified lists, localized personalization by market, and GoHighLevel workflows catching every reply.
5× more seller responses with 50%+ open rates. Zero domains burned since launch.
Mid-campaign, the sending domain hit a SURBL blacklist. Mail was being rejected outright, the campaign was dead in the water, and every day offline cost pipeline.
Immediate send freeze, root-cause diagnosis, domain alternatives deployed, aggressive list hygiene to remove the trigger, then a monitored gradual re-warm.
Delisted and back to the inbox in 14 days. Campaign relaunched on clean infrastructure — no repeat flags since.
Compliance-sensitive outreach in a spam-filter minefield. Finance keywords were triggering filters, corporate firewalls were rejecting mail, and decision-makers never saw a single message.
Filter-safe copy frameworks that avoid trigger patterns, pristine domain authentication, conservative volume ramps, and verified decision-maker lists — built for the strictest corporate gateways.
90%+ inbox placement into corporate mailboxes. Consistent qualified meetings with CFOs and finance directors — without a single compliance flag.
Crypto is the most-filtered vertical in email. Words like "token" and "wallet" sent everything to spam, domains were flagged within days, and investor outreach was effectively invisible.
Expendable secondary-domain architecture with aggressive rotation, crypto-safe copy engineering, dedicated IP sending for announcements, and daily blacklist monitoring across every domain.
85%+ inbox placement in the hardest vertical there is. Investor and partner outreach landing consistently, with domains surviving month after month.
ROBAITEC (SMC Private) Limited is a deliverability-first operation serving B2B and B2C businesses globally from Dubai and Islamabad. Every engagement is run by a certified, Top Rated Upwork specialist — never handed off, never templated. We build the sending infrastructure, defend the reputation, and stay accountable to the numbers.
30 minutes. I'll look at your setup live, tell you exactly what's broken, and map the fastest route back to the inbox — whether we work together or not.
Free consultation · No commitment · hello@robaitec.com
Feedback from founders and sales teams
"Zeeshan fixed our deliverability in 2 weeks. We went from 15% inbox to 97%. He knows his stuff — not just theory, actual implementation. Exceptional communication throughout."
"Our team was struggling with Smartlead setup. Zeeshan optimized everything — warmup, sending patterns, list quality. ROI went through the roof. Would hire again without hesitation."
"Worth every penny. He doesn't just fix immediate problems — he builds a system that scales. Our emails went from failing to crushing. The reporting alone is worth the retainer."
"Handled our Apollo setup end-to-end — domains, warmup, sequences, CRM sync. Delivered ahead of schedule and documented everything so our team could actually run it."
"We got blacklisted mid-campaign and were losing pipeline daily. Zeeshan diagnosed it same-day, deployed domain alternatives, and had us delisted and sending again fast. A genuine specialist."
"Booked 25+ podcast interviews from a single campaign he built for us — curated list, real personalization, human-sounding sequences. The response rate surprised even us."
Everything you need to know about how we fix deliverability, what it costs, and how fast you'll see results.
Can't find what you're looking for? Book a free 30-minute call and I'll answer everything about your specific setup.
Ask on a Call →3–5 days for a complete analysis with detailed recommendations. Implementation starts immediately based on the findings.
Yes. New domain + proper setup + strategic warm-up = back in the inbox. It takes 3–6 weeks depending on severity. I've recovered worse.
Not always. Under 1,000/day? One domain works fine. At 5,000+/day? A secondary domain network is needed for scale.
Project-based: $500–1,500 for audits. Implementation varies by scope. Monthly retainers are available for ongoing optimization.
Week 1: first improvements. Weeks 2–3: noticeable changes. 30–60 days: full optimization for best results.
Yes. Instantly, Smartlead, Apollo, Woodpecker, HubSpot, SendGrid — I optimize whatever you're already using.
No problem. The infrastructure fixes (domain reputation, authentication, warm-up, list quality) work across every platform.
Yes. Monthly retainers for ongoing monitoring, optimization, and scaling — or one-off projects if you prefer.
Book a free 30-minute call. I'll audit your setup and show you exactly what's broken and how to fix it.