Empresas base de datos: build the list, don't buy it

A base de datos of Spanish companies is something you build in an afternoon from a segment. With Airscale, the settings you choose before collecting decide what the list ends up costing.

Build the list by segment. Volume without a frame burns credits on rows you never use.

The query empresas base de datos usually starts with someone wanting a big file: all of Spain, all sectors. That file is what most purchased databases look like on delivery. A list built without a segment gets opened once, and the team goes back to LinkedIn by hand.

In Airscale you start from a company search and you fix the frame before you touch anything else. The narrower frame costs you nothing at collection time and it decides everything downstream, because the enrichment spend only happens on rows you would actually call.

Airscale runs on one credit balance, and credits on every plan do not expire. When you collect the companies you actually want instead of a wide net you might want, the same balance sits there between runs and costs nothing to keep ready. Collect wide and you burn credits on rows that will never enter a sequence.

Check the email by name and company, and check the domain

Airscale charges 2 credits to find a verified professional email, and nothing when no email is found. Verification is built in, but it verifies against the person and the company, not against your intent. An email can be technically valid and still belong to someone who left in March.

So the check is manual and takes seconds. Open the row, look at the name and the company, then look at the domain. In Spain this catches a specific failure: companies that changed their domain after a merger and kept the old one alive. A verificado address on a dead domain bounces all the same.

Work out what each contact costs you before you launch

Airscale publishes a credit cost per plan, and the difference between plans is large.

The plans differ in what a credit costs you: the Growth plan sits at $189 a month, the Starter plan at $49 a month, and the Pro plan at $99 a month between the two. What this means in practice: your cost per contact is not a property of the tool, it is a property of which plan you are on and how many of your rows come back with data. If you want to run this calculation against other suppliers, credit systems are not comparable between vendors and we do not try to convert them. We treat the question properly, with the method and the arithmetic, in our piece on what a B2B data provider costs per contact.

The detail of how we run this on live accounts, including the two settings that move the bill, is in our Airscale review.

Export after reading the free count first

Before any large export, read the count. Airscale exposes a free count endpoint, and reading it before the run tells you how many rows your segment actually returns. That count is also the denominator you want, because the total field in the paginated response comes back as zero, a quirk that has caught us more than once. Check the count, sanity-check the segment, then paginate the find endpoint. If your stack can call their MCP server, the proper export endpoints live there rather than in the public REST API.

A bought file still makes sense when you need to size how many payroll companies exist in Spain before anyone calls anyone

If you want to know how many payroll companies exist in Spain, a static list answers that. The moment the list feeds sequences, building beats buying.

If you already run your own chain across two or three providers, do not replace it. Put Airscale as the last layer: your existing providers go first, only the rows they could not find reach the Airscale credit balance, and since credits do not expire, an irregular use costs nothing to keep ready. That pattern, calling several sources in order, is waterfall enrichment, and the order you choose is the part you control.

If you are comparing this against the rest of the market, everything we run in this category sits in our B2B data section.