Buying B2B leads can look like a shortcut to new sales conversations. It is not. If you have not defined the companies you need, the data your team will use and the next action after delivery, you are buying a spreadsheet and creating more research work. These seven checks help you assess a B2B lead list before you order it.
Key takeaways
- Define the target group before ordering: Switzerland had 626,033 market-oriented businesses in 2023; “all SMEs” is not an actionable segment.
- Company size belongs in the brief: 99.7% of Swiss companies are SMEs and 89.8% have fewer than ten employees. If your offer needs larger companies, say so.
- A purchased company contact is not automatically a sales-qualified lead: qualification happens after fit, response and a meaningful next step are known.
- Ask for a sample: check 10 to 20 records against the agreed geography, business activity, website and contact fields.
- Buy data for a channel, not every field available: postal outreach, phone preparation and CRM enrichment need different data.
- Deduplicate before delivery: customers, open opportunities, opt-outs and related companies belong in the exclusion brief.
- Plan the handover: a list creates value only when someone imports, prioritises, contacts and records the outcome.
What do you actually buy when you buy B2B leads?
The market often calls a selected list of companies or decision-maker contacts “B2B leads”. For sales, the distinction matters: a purchased target company is not a person who has expressed buying intent. A qualified lead exists only after a suitable company responds and a meaningful next step has been agreed.
A useful delivery can include company name, postal address, main phone number, website, category, region and, where appropriate, publicly listed contacts. The guide B2B Lead Generation in Switzerland explains how selected companies become opportunities. This guide covers how to judge the data before you buy.
Short answer
Check target group, fields, sample, delivery format, permitted use and handover before you buy B2B leads. If those points are unclear, the purchase does not prepare a campaign; it postpones the decision to your sales team.
The 7 checks before you order
- Target group: industry, region, company profile and exclusions are written down.
- Data fields: every ordered column supports phone outreach, postal mail or your CRM.
- Sample: you check 10 to 20 relevant records before ordering.
- Freshness: ask how active companies and agreed fields are checked.
- Price: compare follow-up work and exclusions, not only the price per record.
- Handover: import, prioritisation, suppression list and ownership are agreed.
- Channel: the planned channel fits the data, target group and applicable rules.
A practical view
Peter Hadorn, responsible for SwissB2B at Swiss Portal Solutions GmbH, says: “A file is only as good as the question asked before research starts. Once industry, region and required fields are clear, sales can work with the selection. When they are not, the list only distributes extra research work.”
How do you check B2B leads in Switzerland before buying?
Check B2B leads in this order: target group, data fields, sample, delivery format, permitted use and campaign handover. This shows whether the delivered file will make the next sales step easier. The seven mistakes below are where purchases usually fail.
Mistake 1: Your target group is too broad
“All Swiss SMEs” is almost never a usable target group. The University of St. Gallen’s 2026 SME study counts 626,033 market-oriented businesses in Switzerland in 2023. 99.7% are SMEs and 89.8% have fewer than ten employees. That breadth does not help a sales team whose offer fits only particular industries, regions or company profiles.
Write the brief so that a new colleague can understand it: “Trust companies in the Canton of Bern with a public main number and their own website” is testable. “Companies that may need our service” is not. Also define exclusions such as current customers, competitors, very small firms, existing opportunities and opt-outs.
How large should the first selection be?
Match the first selection to your sales capacity. A group of 100 to 250 companies is often sufficient to test data, preparation, outreach and follow-up. A group of 500 to 1,000 suitable companies provides a stronger basis for judging a campaign over several weeks. These are planning ranges, not performance promises.
Mistake 2: You order fields that do not fit the channel
Choose data fields based on the contact method you will actually use. A team that orders a large dataset before deciding whether it will call, mail or enrich a CRM often pays for information nobody uses.
| Planned step | Usually useful fields | Check before buying |
|---|---|---|
| Phone preparation | Company name, main number, industry, region, website | Is the number a usable business contact? |
| Addressed letter | Company name, complete address, region, segment | Is the address complete and does the message fit the segment? |
| CRM enrichment | Website, industry, region, existing account mapping | Can the fields be imported without creating duplicates? |
| Personal preparation | Publicly listed contact, role, company context | Is the person publicly connected to the company and relevant to the case? |
Mistake 3: You do not inspect a sample
A sample shows whether a supplier understands the later working file. Ask for the agreed columns, then inspect 10 to 20 records. Does the company exist? Does the website fit? Is the category understandable? Is it in the agreed area? Is the phone number usable? A short sample check exposes the difference between a database demonstration and a selection ready for your campaign. See sample data and included fields on the offer page.
The sample must enable a decision
A polished dashboard is not evidence of data quality. You need the exact fields your team will use and enough records to test structure, relevance and exclusions.
How do you assess data freshness and source quality?
Freshness is not a marketing claim. Ask how companies are selected, whether they are checked as active during research and which fields are actually agreed. In a Swiss sample, the Central Business Name Index (Zefix) can help you check register details. A register, a company website and a directory each answer different questions; none replaces a campaign brief.
Mistake 4: You compare only the price per record
The cheapest record is not necessarily the cheapest campaign. Missing fields, unsuitable industries and unclear exclusions move work from the supplier to your team. Compare what is delivered, how tightly the selection is defined, whether the file works in your environment and how incorrect records are handled. Then include preparation, suppression checks, follow-up and evaluation in the cost. You can compare packages and price ranges for the planned quantity.
What delivery format and usage rights do you need?
You are buying a working basis, not merely information. Confirm CSV or Excel delivery, CRM compatibility and who may work with the file. This does not authorise every contact channel. It prevents the team from discovering after delivery that it cannot import, assign or maintain opt-outs in the agreed process.
When is own research better than buying B2B leads?
Research your own list when you are preparing a small number of strategic accounts. Buying a defined company-data selection is useful when the target group is clear but manually finding many similar companies would slow sales down. Use Zefix for a register check on one company, not as a substitute for a campaign-ready selection.
| Situation | Better route | Reason |
|---|---|---|
| A few strategic accounts | Own research | Your team can prepare every case deeply. |
| Verify register details for one company | Zefix | The official source answers registration questions. |
| Many similar companies for a campaign | Defined B2B lead selection | Research follows agreed criteria and delivers a working base. |
| No clear target group or contact plan | Do not buy yet | Define the offer, segment and process first. |
Mistake 5: You do not distinguish company and personal data
A company name, general address and main number are different from a named person, direct line or personal email. Where a natural person is identifiable, the principles of the Swiss Data Protection Act apply. Record the source, purpose, chosen channel and how objections are suppressed. For channel-specific rules, see Cold outreach in Switzerland.
Mistake 6: You buy a file without a handover process
Data becomes useful only when the next action is known. Decide who imports the file, checks duplicates, prioritises companies, documents refusals and measures what later becomes a conversation, offer or order.
- Define the selection: industry, region, language, size and exclusions.
- Confirm the fields: order only data needed for the chosen channel and CRM.
- Check the delivery: test sample and file structure against the agreed brief.
- Assign ownership: one person or team owns import, prioritisation and first contact.
- Track feedback: record response, objection, next step and campaign source through to the order.
How do you test the first delivery?
Test the first delivery against your campaign logic before broad use. Check a small sample for segment fit, address, website, category and the fields the sales team needs. Then work a limited group with prepared follow-up. The questions that emerge in real preparation improve the next selection more than a retrospective comparison of thousands of rows.
How do you avoid duplicates and unnecessary contacts?
Provide existing customers, open opportunities, prior refusals and internal suppression lists as exclusions before research begins. Check more than company name: subsidiaries, different spellings and multiple sites in one group can otherwise reappear. This protects existing relationships and makes campaign measurement meaningful.
Mistake 7: You choose an unchecked contact channel
Choose a channel that fits the data, target group and legal conditions. A purchased email address is not consent for automated advertising. Telephone outreach must respect star-marked and unlisted numbers. Personally addressed mail is assessed differently from mass email. The SECO guidance explains the Swiss rules for unsolicited calls.
What should your order brief contain?
- Your offer: what you sell and why it is relevant to this group.
- Industry and keywords: activities to include or exclude.
- Area and language: relevant cantons, regions, cities or postcodes.
- Company profile: size, legal form or existing-account criteria.
- Required data: the fields needed for phone, post, CRM or personal preparation.
- Contact channel and handover: how the selection will be used, checked and maintained.
Conclusion: Buy a selection, not a promise of closed business
Buying B2B leads makes sense when the data prepares a clearly defined campaign. The useful question is not “How many records do I get?” but “Can sales use this information to approach these companies meaningfully?” If target group, fields, sample, channel and handover are defined first, you receive a working file rather than another list.
When those criteria are clear, you can have Swiss company addresses researched to your criteria. The offer page explains the selection, delivery and ordering process; this guide remains the checklist for making a better buying decision first.