"We need more leads" is almost always the wrong diagnosis. Most B2B teams we talk to already have more contacts than they can properly follow up on — the problem isn't outbound prospecting volume, it's that the wrong contacts are in the list, and in Belgium's multilingual market, there's a sixth mistake that compounds all the others.

Mistake 1: Prospecting before defining the ideal customer

If you can't describe your best customer in one specific sentence — industry, company size, role, and the problem that made them buy — any list you build will be too broad to convert well. Define the profile first. Everything else follows from it.

A useful test: if your ideal customer profile could describe three different companies in three completely different industries, it isn't specific enough yet.

Mistake 2: Optimizing for list size instead of fit

A list of 5,000 loosely-related contacts converts worse than a list of 200 that actually match your ideal customer profile. Response rates on outreach are driven far more by relevance than by volume.

We'd rather send a Belgian SME 200 tightly-targeted emails with a strong response rate than 5,000 generic ones that barely get opened — the math favors precision every time, and the smaller list is far cheaper to build properly.

Mistake 3: Treating outreach as one-size-fits-all

The same generic message sent to a founder and a procurement manager will land differently — or not at all. Messaging needs to speak to the specific problem that role actually has, not a generic pitch about your product.

A founder cares about growth and time saved; a procurement manager cares about risk, cost, and whether this creates more work for their team. Write two or three variants of your opening line, one per role, before you send anything at scale.

Mistake 4: No system for follow-up

Most replies come after the second or third touch, not the first. Teams that give up after one cold email are leaving the majority of their pipeline on the table. A prospecting effort without structured follow-up automation is an outreach effort, not a system — three to five touches spaced over two to three weeks is a reasonable starting cadence for most B2B outreach.

Mistake 5: No CRM hygiene

If your sales team can't see who was contacted, when, and how they responded, prospecting effort gets duplicated or dropped. The contact data is only as useful as the CRM and lead scoring system that tracks what happens to it next. Even a simple, consistently-updated spreadsheet beats an expensive CRM nobody actually logs activity into.

The most common failure mode isn't picking the wrong tool — it's picking a good tool and never enforcing that the team actually logs every call, reply, and status change in it. A CRM that's 80% up to date is often more dangerous than no CRM at all, because people trust it anyway.

Mistake 6: Prospecting in the wrong language

This one is specific to Belgium, and we see it constantly: a French-language email sent to a Flemish decision-maker, or vice versa, sent with good intentions but poor research. It reads as a small thing, but it signals — correctly — that you didn't do basic homework on who you're contacting.

Before outreach starts, confirm the region and likely working language of each contact. Where you're unsure, English is usually a safer default than guessing wrong between French and Dutch.

The fix

Good prospecting is a narrow, well-qualified list, matched with role-specific, language-appropriate messaging, and a consistent follow-up cadence tracked in one place. Fix the targeting before you scale the volume.

Frequently asked questions

How many follow-ups should a B2B cold email sequence have?

Three to five is a reasonable range for most B2B outreach, spaced roughly four to five days apart. Response rates typically peak on the second and third touch, not the first.

Should I prospect in French, Dutch, or English in Belgium?

Match the contact's region and known working language where you can determine it — French for most of Wallonie and Brussels, Dutch for Flanders. When you genuinely can't tell, English is a safer neutral default than guessing wrong, especially for B2B contacts who are used to working across languages.

What's a good response rate for cold B2B outreach?

It varies widely by industry, but a well-targeted, role-specific campaign should meaningfully outperform generic blasts. Teams that fix their targeting first — mistakes 1 and 2 above — often see response rates several times higher than before, simply from sending fewer, better-matched emails.