We do everything we’re supposed to do.

We build the campaign strategy, align the teams, generate demand. The form fills start rolling in. Marketing celebrates. Sales gives a nod. The inbound engine is doing its job.

But somewhere between MQL and pipeline, it all falls apart.

The leads sit untouched in the CRM. Reps ignore them. SDRs cherry-pick a few. Follow-up is slow or nonexistent. Sales says the leads are unqualified. Marketing says they’re not being worked. And we’re caught in the middle, watching pipeline coverage slip and CAC inch upward with nothing concrete to point to.

No one owns the problem, but everyone feels the pain.

The truth is, this isn’t a lead gen problem. It’s an operational one. And unless we solve it, we’ll keep spending more just to get less, while trust between teams quietly erodes.

In our recent GTM Science episode, our CEO and Founder Eddie Reynolds broke down exactly why this happens, and what it takes to turn qualified leads into actual revenue.

Here are the key insights from the interview, which you can listen to in full on Spotify here or Apple Podcasts here.

Problem 1: MQL Quality Is Low

As Eddie describes it, the issue with MQLs not converting comes down to two problems.

The first problem is about precision. Most companies aren’t even aligned on what counts as an MQL. Definitions are fuzzy, scoring models are outdated, and just because a lead hit a threshold in HubSpot doesn’t mean sales will see value in it.

We’ve seen this repeatedly: marketing generates “qualified” leads that are a mismatch for the sales motion. Either the lead is too small, not a real buyer, or far too early in their journey.

As Eddie said, “It’s not just about how many MQLs we’re getting. It’s about which of those are actually the right fit for our sales motion and our buyer.”

Until there’s alignment on what “qualified” really means, and a feedback loop to test and refine it, MQLs will always be suspect.

Problem 2: MQL Follow-Up Is Poor

The second problem comes down to execution.

Even when the leads are good, many companies fail to execute a proper follow-up motion. Routing is messy. SLAs are loose or nonexistent. Reps get overwhelmed. And no one is truly accountable for converting MQLs into meetings.

We often find high-intent hand-raisers that were never contacted, or contacted once with no follow-up. And because there’s no inspection mechanism, it keeps happening.

“One of the marketing leaders I spoke with yesterday said that they have hand-raiser leads from the past three months that haven’t received a single touch,” Eddie says. “Someone is raising their hand saying, ‘I would like a demo of your software,’ and no one follows up at all.”

This is where operational design matters. There need to be clear rules, workflows, cadences, and visibility into whether those are being followed. In most organizations, follow-up is owned by the most junior reps on the team, often fresh out of college SDRs without a structured playbook or accountability.

The fix starts with setting a consistent, multi-channel cadence such as email, phone, LinkedIn, etc. Then, enforcing a minimum number of touches before giving up, while ensuring we’re measuring:

• Total touches before disqualification
• Time to first touch, especially for hand-raisers
• Follow-up rate by rep, lead source, and persona

“If you take your company from a process where everything’s broken… to a super tight process where we’ve got super fast lead response time, and enough follow ups on every single lead… There’s no reason you can’t get a 30% increase in Closed Won deals, or [in the case of one of our customers], a 2500% increase,” Eddie says.

Setting the Bar: CAC Payback by Lead Type

Once your follow-up process is consistent and enforced, you can start comparing lead performance through a more meaningful lens: Conversion Rates and CAC Payback.

Forget vanity metrics like “leads generated.” The real test of inbound performance is how efficiently we convert leads into revenue.

We obviously need to look at conversion rates, but that doesn’t tell the whole story about which leads are worth chasing and which are not. For that, we need to understand CAC Payback.

CAC Payback = Total Sales and Marketing Cost / (New MRR × Gross Margin %)

Here’s how we break it down:

Start with Lead Value: Total ARR generated from inbound leads, divided by the number of MQLs. Then factor in gross margin to reflect actual contribution.

From there, calculate CAC per Lead by including both marketing costs to generate MQLs and sales costs to chase and close them.

Finally, map it to CAC Payback using this formula:

Total S&M Cost / (New MRR x Gross Margin %)
Or:
CAC Per Lead / (Lead Value (MRR) x Gross Margin %)

This forces the organization to stop debating whether a lead is “good” and start measuring how long it takes to earn back the investment to generate and convert that lead.

As Eddie said, “What matters is how efficiently we’re turning leads into revenue. That’s the conversation we need to be having—not just how many leads we’ve generated.”

But CAC Payback looks very different across segments. An SMB lead might convert faster, but at lower deal value. Enterprise might be worth more, but with a much longer sales cycle and higher cost to close.

So, we break MQLs into categories like:

• Industry verticals
• By buyer persona
• By lead score band
• SMB vs Mid-Market vs Enterprise
• North America vs EMEA vs APAC

This allows us to isolate where efficiency is breaking down. Are we spending too much on leads that don’t convert? Are we routing low-fit leads to high-cost reps? Are we driving leads from segments we’re not operationally set up to support?

Once we see the data broken out, the fix becomes obvious.

“This is a trap a lot of organizations fall into,” Eddie says. “Because not a lot of people are looking at it that granularly. And that’s a real missed opportunity, especially from a capital allocation standpoint.”

Customer Story: We’ve Seen This Firsthand

We worked with a large enterprise that was struggling with this exact issue.

They were generating what looked like promising inbound leads, but conversion rates were abysmal. Internally, sales was saying the leads were bad. Marketing wasn’t convinced. There was no process, no enforcement, and no clarity.

They didn’t have an SDR team. Inbound leads were routed straight to Account Executives, and no one was following up consistently. Reps were cherry-picking, ignoring hand-raisers, and working leads with no urgency or cadence.

We helped them stand up a proper inbound SDR motion, starting with process design, lead routing, tooling, and reporting. We defined follow-up SLAs. We tracked outreach and response across multiple channels. We trained managers to inspect the data and hold reps accountable.

The results were immediate and dramatic.

They went from 0.2% lead-to-closed-won conversion rate to 5% within the first few months. That’s a 25x, or 2500%, increase in performance, without changing their marketing programs or lead sources!

The only difference?  A real follow-up process, enforced consistently, measured objectively.

What To Do Next

Here is where to start.

Audit your follow-up process.
Are reps responding to hand-raisers within five minutes? Are they touching each lead five to ten times before disqualifying? Is all of that tracked in a system that managers can review?

“If we do that and we collect some other information along the way, then we can look back and say, okay, these types of leads are converting, these types of leads are not converting, and we can have an objective viewpoint on this,” Eddie says.

Run a capacity plan.
Most follow-up failures happen because reps are overloaded. Figure out how many activities your reps can realistically do per day, and how many leads they can support with consistent outreach.

“You give them a thousand leads, there’s just absolutely no way that they’re ever going to be able to follow up eight times,” Eddie says.

Use outbound as a benchmark.
If your cold outbound reps are booking more pipeline than your inbound MQLs, that is a sign your definition of qualified needs to change. Why would any salesperson call an inbound lead if it converts to less revenue than a cold outbound prospect?

Segment and analyze.
Slice historical performance by lead type, persona, score, industry, or geography. Look at lead-to-pipeline and CAC payback by segment. Focus your spend on what actually works.

Align sales and marketing on what “qualified” really means.
Lead scoring is a hypothesis. Validate it with data, and refine it continuously. You do not need it to be perfect. You just need it to be consistent and testable.

How We Can Help

At Union Square Consulting, we help revenue teams fix exactly this.

We design follow-up processes that actually get executed. We build CAC payback models by lead type. We stand up SDR teams, lead routing logic, capacity plans, and reporting. We help you figure out which leads are actually worth chasing, and how to convert more of them.

If your team is generating “good leads” that are not turning into revenue, we can help you prove why, and show you what to do next.

Ready to start converting more MQLs to revenue? Let’s start the conversation.

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