Think Build Implement Repeat
London, UK +44 7367 067226
WhatsApp FOLLOW f in X
  1. Home
  2. Blog
  3. How Do We Stop Buyers and Suppliers Meeting on Our Marketplace and Then Trading Directly?
Problems We Solve

How Do We Stop Buyers and Suppliers Meeting on Our Marketplace and Then Trading Directly?

B2B marketplaces lose repeat orders when buyers and suppliers swap contacts and trade direct. We build detection and reasons for both sides to stay on-platform.

Updated 3 min readBy SpiderHunts Technologies

Free estimateNo obligation

Get a free estimate

Tell us what you need. A senior engineer reads every enquiry.

Takes under a minute. We never share your details.

  • Free consultation
  • No commitment
  • NDA on request

Prefer to talk? Book a free 30-minute call →

Quick answer — TL;DR

Off-platform leakage happens because once a trade buyer and a supplier have done business, the marketplace looks like a middleman taking a cut. We build detection that spots the signs, such as contact details in messages and order patterns that stop suddenly, and help you add value that keeps both sides trading on the platform: credit terms, consolidated invoicing, dispute protection and reorder tools.

The buyer who stopped ordering but did not stop buying

A catering buyer found a good supplier of disposables through your marketplace. Three orders in two months, then nothing. The supplier's sales on the platform dropped at the same time. Later, you see a message thread where the supplier wrote their phone number with spaces between the digits to get past your filter. The buyer now orders by phone, the supplier saves the commission and the buyer saves nothing, except they have lost the protection and terms your marketplace offered.

Why trading goes direct

In B2B, repeat purchasing is the norm. Buyers reorder the same items from the same supplier. After the first few orders, the relationship feels like it belongs to them, and the marketplace's fee looks like an unnecessary cost, especially to the supplier. If the platform offers nothing beyond the introduction, leakage is almost certain.

Your terms may prohibit it. Terms alone rarely stop it. What keeps trade on the platform is value that both sides would lose by leaving.

Signal of leakageWhere to see it
Contact details shared in messagesMessaging system
Buyer and supplier order pattern stops togetherOrder data
Quote requests with no resulting orderRFQ data
Supplier asks for direct paymentMessages, buyer reports
Buyer searches for supplier by nameSearch logs

What leakage costs

Lost commission on your best relationships, which are the ones that went direct. Distorted data, because the most successful matches look like failures. And a marketplace that ends up with only first orders and occasional buyers, which is a harder business to run. Buyers who go direct also lose the protections you offered, so when something goes wrong, they may still blame you.

It also changes how you value your own growth. Acquiring a buyer is expensive, and the return on that spend comes from their second, tenth and fiftieth order. If those orders happen by phone, the acquisition cost is paid in full and the return goes to someone else.

What we build to keep trade on the platform

  1. Message screening: messages are checked for phone numbers, emails and links, including disguised forms that simple filters miss, using pattern rules and AI; flagged messages are masked or held under your policy.
  2. Pattern detection: pairs of buyers and suppliers whose trading stops together after a run of orders are flagged, along with RFQs that go quiet after contact, for your account team to review.
  3. Reorder tools: buyers get saved lists and one-click reorders of previous orders, so ordering on-platform is faster than phoning.
  4. Consolidated invoicing and terms: buyers get one statement and payment terms across many suppliers, which is hard to replicate going direct.
  5. Supplier value: suppliers get guaranteed payment, collections handled and reporting on their buyers, which reduces their reason to take buyers off-platform.
  6. Outreach: flagged relationships get a conversation from your account team, focused on what the buyer and supplier would lose, rather than an accusation.

How you enforce your terms is your decision. We give you the signals and the tools; the policy stays with you.

What your team sees each week

A short list of relationships showing signs of going direct, with the evidence, for the account team to act on. Messages with contact details handled before they reach the other party. And, over time, data on which platform features keep repeat business, so you can invest in the ones that work.

Is repeat trade leaking away?

  • Buyers and suppliers stop trading on the platform after a few orders.
  • Contact details appear in messages despite your filters.
  • Suppliers have asked buyers to pay them directly.
  • Your marketplace offers little beyond the first introduction.
  • Reordering on the platform is slower than picking up the phone.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Is it legal to screen messages between users?

It depends on your terms and privacy notices, which your advisers should confirm. Most marketplaces tell users that messages are monitored for safety and policy.

Will masking contact details annoy users?

Some, which is why value features matter more than enforcement. Masking is set to your policy and can be relaxed after an order is placed if you choose.

Can we stop leakage completely?

No marketplace can. The aim is to make staying on the platform the better option for both sides and to spot leakage early.

Which platforms does this work with?

Any with an API for messages and orders. Screening can also sit in front of a custom messaging system.

Keep reading

More on Problems We Solve

Start here

Tell us what is making trade buyers and suppliers unhappy

Describe your marketplace, the categories you serve and where buyers or suppliers get frustrated. We will tell you what we would build, what should stay with your operations team, and if your platform already has a setting that fixes it, we will point you to it.

  1. You tell us what you needTwo minutes on the form, or a message on WhatsApp.
  2. A senior engineer reviews itAnd comes back with questions, a realistic range and an honest view on fit.
  3. Free 30-minute scoping callWe talk through scope, options and a realistic estimate — with no obligation.
Free estimateNo obligation

Talk to someone who builds this

Send a short brief and we will come back with an honest view and a realistic range.

Takes under a minute. We never share your details.

  • Free consultation
  • No commitment
  • NDA on request

Prefer to talk? Book a free 30-minute call →