Anton Drozdov

Data Scientist

Head of AI&Data

Lead economics

Sales Navigator alternatives, compared on what you still do by hand

Every alternatives list ranks on database size. Here is what each tool charges, who wrote the list you are reading, and a one-hour test for whether the results are right.

Data quality

Email list decay: how to measure it on your own list

Four different things get called decay, and they need four different tests. Here is how to measure each on your own list, and what the published numbers actually cover.

Who to find

"No agencies please": reading a job posting you cannot win

The phrase has no legal force. What decides whether you are paid is agreed terms and effective cause, and neither depends on the advert. Plus the signals nobody prints.

Lead economics

Recruitment agency fees: what is actually published, and what the percentage is calculated on

Three agencies publish a fee on their own site, and all three calculate it on a different base. The same package can produce £6,000 or £17,600. Here is why.

Data quality

Catch-all email: what it means, and what to do with those addresses on your list

A catch-all domain accepts every address, so your verifier cannot tell you which exist. What the label means at five vendors, and what to do with those records.

Lead economics

ZoomInfo alternatives for a company under fifty people

ZoomInfo's own filings say contracts run one to three years, non-cancelable. Nine alternatives ranked by what a small company actually has to sign.

Who to find

PSL, RPO and internal TA: who actually controls a job requisition

A preferred supplier list is a procurement contract with a term. Real ones run two to four years. Here is what that, RPO and internal TA each mean for an agency.