Built for Ad & Social Media Agencies

At 43 Hours, Your Client Is Answering
Leads That Already Hired Someone Else.
MangoTeq Sentinel Answers Them
in Under Five Minutes.

The research behind the number that's quietly costing agencies their clients.

InsideSales.com and MIT studied lead response across thousands of businesses. A lead contacted within five minutes of enquiring is 21 times more likely to qualify than one contacted after 30 minutes.

The average SME service business — the kind your agency runs paid ads for — contacts new leads 43 hours after they enquire. That's not anecdotal. It's been measured, and the finding has held up.

Your clients' leads arrive, sit untouched for 43 hours, and the prospect has already moved on by the time someone calls back. The campaign performed. The problem was the 43 hours.

Book a 15-Minute Walkthrough

Your agency isn't bad at its job. The campaigns are performing. The leads are genuine.

A lead contacted within five minutes is 21 times more likely to qualify than one contacted after thirty. The average service business takes 43 hours.

Until now, your agency had no way to see that gap, prove it, or fix it.

43 hrs
Average response time, already too slow to win the lead
21x
More likely to qualify with a sub-5-minute response
(MIT / InsideSales.com)
£16.8K
Typical annual profit lost per agency to preventable client churn

The Problem

Why This Is Your Agency's Problem, Even Though You Didn't Cause It

Your data ends at the inbox. You have complete visibility over everything you control: the campaign, the creative, the targeting, the cost per lead, the landing page conversion rate.

You have zero visibility over what happens after the lead arrives. Response times, follow-up frequency, contact channels. All of that lives in the client's CRM.

So when conversion underperforms, the conversation goes predictably: you show campaign data, it looks fine, the client hears "it wasn't us." Which sounds like an excuse, even when it's the truth.

7:12 PM // Lead arrives via your client's campaign
Enquiry lands in the client's inbox
Nobody on the client's team is free to respond
7:14 PM // 2 minutes later
Prospect calls the next business on Google
Competitor answers on the first ring
7:19 PM // 7 minutes in
Job booked with a competitor
Your campaign generated the lead. Someone else got the job.
Month Four // The review call
Client says: "The leads aren't converting"
You show campaign data. They blame the ads anyway.

What Sentinel Does, and What It Does Not Do

Sentinel is a fully managed lead response and follow-up service. Not a platform, not a software tool, not a system your team operates. MangoTeq manages it entirely.

The Solution

It Responds in Minutes. It Logs Everything. Your Agency Keeps the Relationship.

Sentinel responds to new enquiries within minutes, while the lead is still engaged. It follows up across WhatsApp, SMS, voice, and email until the lead books, qualifies, or opts out, and logs every lead, every contact attempt, every conversation, every outcome. Your client keeps their current setup. Your agency keeps the client relationship. MangoTeq handles delivery.

Sub-5-Minute Response Every client enquiry hears back before the prospect dials the next business on Google
Full Lead Visibility Every contact attempt and outcome logged, so the "bad leads" objection has no purchase
Done For You MangoTeq builds it and runs it. Nothing for your team or your client's team to manage
Automatic Follow-Up If the first message gets no reply, Sentinel keeps following up across every channel
Sentinel works around your client's existing CRM, calendar, and lead sources. Nothing changes for your client's team, and your agency keeps the relationship at every stage.

How It Works

Three steps. No disruption to your clients.

1

We Diagnose

We review the client's current lead flow and show you exactly where response delays are costing booked revenue.

2

We Deploy

Sentinel is built around the client's existing CRM and calendar. No software for them to install, no process to change.

3

We Protect

Every enquiry gets an instant response. Your agency gets the data. The client's conversion improves.

The Outcome

The Documented Cost of the Follow-Up Gap

Service clients who churn from agencies do so at a predictable point: months three to four. One churned client at £3,000 a month represents roughly £700 in profit after costs; losing them at month four destroys £5,600 in future profit. Three such losses a year — a conservative estimate for an agency managing five to ten service clients — represents £16,800 in preventable annual profit loss.

Acquiring a new client costs 5 to 25 times more than retaining one (Harvard Business Review). A 5% improvement in retention can increase profits by up to 95% (Bain & Company). That is not a marginal number.

  • Leads contacted and followed up properly, so client conversion improves
  • Full visibility into every lead, so the "bad leads" objection has no purchase
  • Results improving month over month, so clients increase ad spend instead of reviewing the agency
  • The month-four churn call doesn't happen when the client's numbers are improving

Your data used to end at the inbox. Now it doesn't.

After Sentinel Deployment
Lead Response Time
<5 minutes
Down from 43-hour industry average
Follow-Up Consistency
100%
Every lead, every channel, every time
Client Retention
Protected
No disruption to your clients
"Most agencies we work with discover their churn isn't a campaign problem at all. It's how slowly their clients' leads get a reply. The campaigns were never the issue."
– MangoTeq Sentinel Deployment Team
£16.8K
Typical annual profit lost
to preventable client churn

Questions Agencies Ask Before They Commit

Straight answers to what agency owners ask us most.

Account managers do real work during business hours. The 43-hour average isn't built in the hours they're covering. It's built in the hours nobody is. Sentinel responds within minutes, on every channel, around the clock.
No. The mechanics are identical whether you're running this for two clients or twenty. One short questionnaire, handled entirely by us from there.
No. Every message goes out in your client's name, written the way that business actually talks. The lead never sees MangoTeq. Not once.
A notification tells someone a lead arrived. It doesn't contact the lead, follow it up, or keep going until it books or opts out. That's the part most CRMs leave to whoever happens to be free, and it's the part Sentinel operates instead.
That's worth checking before assuming it's true. Ryan Unrau proved the point with a £40 million roofing company: 2,000 leads written off as dead, £48,000 booked once someone actually followed up. Same leads. The only thing that changed was follow-up.
Pricing and terms are agreed on the call, after we've reviewed that client's lead volume and pipeline. And if we don't deliver the agreed minimum of qualified conversations within 60–90 days of go-live... we keep working. No extra cost. Until we do.
It depends on the client's lead volume and deal value, so we work it out on the call. Pricing is performance-aligned in most cases. We go through the numbers together before anything is agreed.

Book a 15-Minute Walkthrough

Bring one campaign you're running to generate leads for your own agency. We'll walk through exactly how Sentinel handles those enquiries and what you'd expect to see over the first two weeks.

Book My 15-Minute Walkthrough
For agencies managing £10K+ per month in client ad spend.
£10K+ Monthly Ad Spend Done-For-You Deployment Profit Shared 60–90 Day Performance Guarantee
Book a 15-Minute Walkthrough