We Fill Your Calendar With Qualified Sales Calls.
InboxOpus builds and runs your entire cold email system — from lead scraping to inbox setup to reply handling. You just show up to calls with ready-to-buy prospects.
Limited spots available. We only onboard 4 new clients per month to maintain quality.
Trusted by B2B companies across industries
Sound Familiar?
Most B2B business owners are stuck in the same cycle. Great at delivering their service. Terrible at consistently generating new clients.
Chasing Referrals That Never Come
You're relying on word-of-mouth and hoping past clients send you someone new. It's unpredictable, unscalable, and keeps you stuck at the same revenue ceiling.
Wasting Hours on Manual Prospecting
Spending your best hours scrolling LinkedIn, building lists, and sending one-off emails that go nowhere. That's time you should be spending closing deals.
Burned by Agencies That Over-Promised
You've paid for 'lead gen' before and got nothing but excuses. Vague reporting, no accountability, and zero qualified meetings on your calendar.
Inconsistent Pipeline Every Month
Some months are great, others are terrifying. You have no predictable, repeatable system for generating new business — just feast and famine.
That's exactly why InboxOpus exists.
We take the entire prospecting and outreach operation off your plate and replace it with a predictable, data-driven system that books qualified calls directly onto your calendar.
From Zero to Booked Calls in 14 Days
A fully managed, end-to-end cold email system. We handle everything. You close deals.
We Build Your Entire Outbound System
In the first week, we do a deep-dive into your business, ICP, and offer. We then build your entire cold email infrastructure — branded domains, warmed inboxes, verified lead lists, and AI-personalized copy — completely done for you.
We Launch & Optimize Your Campaigns
Campaigns go live in week two. We test multiple messaging angles, audiences, and subject lines simultaneously. Every reply is analyzed. Every signal feeds back into the system. We iterate fast until we find what converts.
We Handle Replies & Book Your Calls
Our SDR team manages every inbox response — qualifying prospects, handling objections, and booking calls directly onto your calendar. You just show up to conversations with people who are genuinely interested in your offer.
Everything You Need. Nothing You Don't.
A complete, done-for-you cold email system. We handle every piece of the puzzle so you can stay focused on closing.
Full Infrastructure Setup
10 branded domains, 490+ warmed inboxes, SPF/DKIM/DMARC configured. Deliverability-first from day one.
Verified Lead Database
Triple-verified, deeply researched prospect lists built around your exact ICP. No generic scraped junk.
AI-Personalized Email Copy
Every email is personalized using AI signals — company news, LinkedIn activity, recent funding, and more. Your prospects feel like you know them.
Weekly Performance Reports
Clear, honest reporting every week. Open rates, reply rates, leads generated, calls booked. No vanity metrics.
SDR Response Management
Our team handles every reply — qualifying interest, answering questions, and booking calls into your calendar.
You Keep Everything
After our engagement, you own all the domains, inboxes, lead lists, copy, and SOPs. No lock-in, no hostage assets.
Ready to see what's possible for your business?
Free 45-minute strategy call. No commitment required.
Real Campaigns. Real Revenue.
These aren't cherry-picked outliers. This is what a well-built cold email system does when it's properly targeted and optimized.
B2B SaaS Company
A SaaS startup needed to break out of their referral-only growth model. We built a targeted outbound system aimed at mid-market operations teams.
Marketing Agency
A digital marketing agency wanted to stop relying on referrals and build a predictable outbound channel. We targeted e-commerce brands with $1M+ revenue.
Private Equity Firm
A boutique advisory firm needed to reach $1B+ PE firms. We crafted hyper-personalized outreach targeting partners and managing directors at target firms.
E-Commerce Consultant
An e-commerce growth consultant wanted to scale beyond their existing network. We built a targeted list of DTC brands doing $500K–$5M in annual revenue.
What Our Clients Say
Don't take our word for it.
"We'd tried cold email before with two other agencies and got nothing. InboxOpus was completely different — they actually understood our ICP and the copy felt human. We booked 18 calls in the first month."
"I was skeptical, but the results speak for themselves. They set up everything, handled all the replies, and just put qualified calls on my calendar. I closed two deals in the first 45 days."
"The reporting is transparent and honest. They don't hide behind vanity metrics. I know exactly what's working and what's being optimized. That level of accountability is rare."
"What impressed me most was the personalization. These weren't generic blasts — every email felt like it was written specifically for the recipient. Our reply rates were 3x what we'd seen before."
"They delivered on every promise. Setup was fast, the team was responsive, and the quality of leads was exactly what we needed. Already renewed for another quarter."
"InboxOpus helped us break out of the referral trap. We now have a predictable outbound channel that consistently generates 8–12 qualified calls per month. Game changer."
Common Questions
Everything you need to know before booking a call.
Most agencies send generic blasts and call it a day. We build a complete, data-driven outbound system — personalized at scale using AI signals, with dedicated SDR response management, and transparent weekly reporting. You get a partner invested in your results, not a vendor hitting send.
Cold email fails for three reasons: bad targeting, generic copy, or poor deliverability. We solve all three. We research your ICP deeply, write emails that feel genuinely personal, and maintain industry-leading inbox placement rates. The system we build is fundamentally different from what most agencies deploy.
Most clients see their first qualified calls within 2–3 weeks of campaign launch. We spend the first week on setup and infrastructure, then campaigns go live in week two. By the end of month one, you'll have real data and real conversations happening.
Minimal involvement from you. We'll need about 2 hours in the first week for onboarding — to understand your offer, ICP, and ideal client profile. After that, we handle everything. You just show up to the calls we book.
We work best with B2B service businesses — agencies, consultancies, SaaS companies, professional services firms, and financial services. If you sell a high-ticket service or product to other businesses, cold email is likely a strong fit for you.
Everything. All the domains, inboxes, lead lists, email copy, SOPs, and campaign data are yours to keep. You can take it in-house, continue with us, or hand it to another team. We don't hold your assets hostage.
Deliverability is our obsession. We use branded domains (never your primary domain), properly configure SPF/DKIM/DMARC, warm inboxes over 3–4 weeks before sending, monitor bounce and spam rates daily, and rotate sending infrastructure as needed. Our clients average 97%+ inbox placement.
Pricing depends on your target market size, desired send volume, and whether you need SDR response management. Book a free strategy call and we'll give you a custom quote based on your specific situation. We have options for both fixed-fee and performance-based engagements.
Ready to Fill Your Calendar With Qualified Calls?
Book a free 45-minute strategy call. We'll audit your current outbound, identify the biggest opportunities, and show you exactly how InboxOpus would work for your business.
Limited to 4 new clients per month. Spots fill fast.