Comparison
Modern Inbound vs Leadium: B2B Lead Gen Compared (2026)
August 8, 2026 · 6 min read
Modern Inbound charges $600/mo plus $100 per positive reply. Leadium keeps pricing custom. See which B2B outbound agency fits your team size and budget in 2026.
How to pick a tool
Modern Inbound runs a fully managed cold email program, billed quarterly. Leadium keeps its pricing off the website and you only get a number after a sales call. For a founder comparing two B2B outbound agencies, contract terms deserve as much attention as the meetings each one actually books.
By Rishabh Ambasta, Founder, Modern Inbound.
Quick answer:
Simplest pricing: Modern Inbound, one flat fee billed quarterly.
Fastest onboarding: Modern Inbound, 14-day domain warmup before the first send.
Best for staffing-style flex: Leadium, built around SDR capacity rather than infrastructure.
Most predictable cost: Modern Inbound, one flat fee billed quarterly.
Modern Inbound vs Leadium at a Glance
Modern Inbound and Leadium both run outbound for B2B teams, but they differ on details that affect your timeline and your invoice. Leadium quotes case by case and, like most custom-scoped agencies, takes longer to lock in scope before work begins.
| Comparison Axis | Modern Inbound | Leadium |
|---|---|---|
| Pricing | Billed quarterly, with the price listed on the site | Custom quote, disclosed after a sales call |
| Service scope | Data, copy, and sending in one plan, with mailboxes and domains bought in your name | Outbound SDR staffing and campaign management |
| Client size fit | B2B SaaS, staffing, consulting, HR tech, mostly under 100 employees | Startups to mid-market |
| Onboarding speed | 14-day domain warmup before first send | Not publicly disclosed |
| Reporting and visibility | Weekly reviews with direct founder access | Standard account management reporting |
| Contract flexibility | Billed quarterly, in advance | Typically a longer retainer commitment |
What Does Each Agency Actually Do?
Modern Inbound is a done-for-you cold email and LinkedIn outbound shop. It sets up your domains and mailboxes in your name and handles data sourcing and copywriting under one flat fee, billed quarterly. Leadium positions itself as an outbound sales development agency, closer to renting a trained SDR team than buying a full infrastructure stack.
Modern Inbound has delivered 6,000+ warm leads for clients in recruitment, SaaS, finance, healthcare, real estate, and IT services, including teams at Yes Bank, PhonePe, Razorpay, Porter, SEBI, and Ather Energy, per internal Modern Inbound campaign data. Leadium's staffing model works if you already have a sales process, less so if you need someone to build the deliverability stack from zero.
How Do the Costs and Terms Compare?
Leadium doesn't publish a number, but mid-market SDR-style agencies in this category commonly price retainers between $4,000 and $7,000 a month once staffing is factored in.
Run the math against hiring in-house. A single SDR costs $70,000 to $90,000 a year in base salary alone, per Glassdoor's 2026 SDR compensation data, plus another $10,000 to $15,000 a year for a tool stack like Apollo or ZoomInfo, putting a first-year hire at $80,000 to $105,000. Modern Inbound is billed quarterly, so you can see what cold email brings you before you commit to a full-time hire.
How Fast Can You Start, and How Much Visibility Do You Get?
Modern Inbound runs a 14-day domain warmup before the first send, then gives you weekly performance reviews with direct founder access, not a rotating account manager. Leadium's onboarding timeline and reporting cadence aren't published anywhere you can check before signing.
That founder-access detail matters more than it sounds. When a campaign underperforms in week three, you want the person who built the outbound engine explaining why, not an account manager relaying notes from someone else's team.
Pros and Cons: Modern Inbound vs Leadium
Modern Inbound
- Simple flat pricing, billed quarterly, with the price listed on the site
- Waterfall-verified data across 75+ sources, copywriting, and sending, with mailboxes and domains bought in your name
- Weekly reviews with direct founder access instead of a rotating account manager
The tradeoff: Modern Inbound doesn't run paid ads or LinkedIn ad management. If you need a multi-channel paid demand gen motion alongside outbound, you'll need a second vendor for that piece.
Leadium
- Staffing-style model can flex quickly if you already have a sales process in place
The tradeoffs stack up faster on this side. Pricing stays undisclosed until you're in a sales call, onboarding timelines aren't public, and reporting depth appears to vary by account size.
Who Should Choose Which Agency?
Choose Modern Inbound if you're a B2B founder or ops lead who wants one flat fee covering the entire outbound stack, with weekly visibility. Choose Leadium if you already run your own sales process and just need extra SDR capacity dialing and emailing under your direction.
Picture a 15-person B2B SaaS company with no in-house SDR and a founder who wants proof before a full-time hire. Modern Inbound fits that shape, infrastructure, data, and copy handled, billed quarterly. Picture instead a 60-person mid-market company with an established sales playbook and a VP of Sales who just needs headcount. Leadium's staffing model fits closer to that.
Want every email written for the person it goes to?
Modern Inbound runs hyper-personalised cold email at scale and hands you every warm lead. Book a demo.
FAQ
Is Modern Inbound cheaper than Leadium?
Leadium doesn't publish pricing, but mid-market SDR-style retainers in this category commonly run $4,000 to $7,000 a month once staffing is included, which puts Leadium higher in most cases.
Does Leadium publish its pricing?
No. Leadium quotes custom pricing after a sales call instead of listing a rate publicly.
How fast can Modern Inbound start sending campaigns?
Modern Inbound runs a 14-day domain warmup before the first send, so campaigns typically go live within two weeks of kickoff. Leadium's onboarding timeline isn't publicly disclosed.
Which agency is better for a small B2B team?
Leadium's staffing model works best when you already have a sales process and just need extra hands.
The Bottom Line
If you already run sales and just need more hands on the phone and keyboard, Leadium's staffing model might fit, assuming the custom quote pencils out. If you'd rather keep your terms short, talk to Modern Inbound directly.
Outreach built for your business. Yours to keep.
We build and run outreach inside your business for 90 days, then it stays yours. Tell us your offer and your market and we tell you if it fits.
Rishabh AmbastaFounder, Modern Inbound
Runs a research-led cold email agency measured in delivered replies. Before that, outbound for SaaS teams from $1M to $50M ARR. LinkedIn
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