Should you build lead checks in-house?

The honest answer

Yes, a capable marketing-ops person or data engineer can script the core checks: deduplication, matching against your CRM, overlap between vendor files and your brief rules. The first version takes a few weeks. Whether it is worth building depends on what happens after that.

Where in-house builds stall

• Nobody owns it. The person who feels the pain runs campaigns, not code. Engineering time goes to the product first.
• Upkeep is the real work. Vendors change file layouts, new vendors join, consent rules change by country and your CRM fields move. A script that worked in March is often broken by October.
• The money-saving parts get skipped. Rejection files per vendor, an evidence trail and a vendor scorecard finance trusts are what recover credits, and they rarely get built.
• The builder leaves. Then the tool quietly stops working and the spreadsheets come back.

What Leadvet adds that a script does not

• Vendor layouts, mapped once.Live Leadvet remembers each vendor's column layout after the first delivery, so the next file maps itself.
• Consent rules kept current.Live Rules for APAC, EU and US leads, by country and by how the lead was captured, updated as laws and guidance change.
• Evidence built for vendor disputes.Live Every rejection carries the rule that fired, the matching record and the date, in one file per vendor that the vendor can check line by line.
• A native HubSpot app.In development Install in a few clicks instead of starting a project. Today Leadvet works with HubSpot and Marketo import files.
• Vendor benchmarks.Planned Opt-in, anonymised comparisons such as a vendor's usable rate against the median across customers. No single company can produce this alone. It will only ever use aggregated figures, never lead data.

When building in-house makes sense

• You have a marketing-ops or data team with time to own the tool for years, not weeks.
• You already pay for an enterprise lead management platform that covers these checks.
• Your lead files come from one source in one format.

Decide with your own numbers

Run the last delivery from each vendor through the free check, in your own browser. It shows what you could have rejected and what it was worth, so you can compare that with the cost of building. Get a free file check →