Glossary
What is lookalike prospecting?
Lookalike prospecting means finding new accounts and people who resemble your best existing customers, or the prospects who replied best, and targeting them next. You describe what the best ones share, such as industry, size, role, technology or behaviour, and search for others with the same pattern.
Published by Sellinger AI. Numbers and settings checked on 24 October 2026 against the fact register. Report an error.
How do you build a lookalike list?
- Pick your ten to twenty best customers or best conversations.
- Write down what they share: industry, size, region, role, trigger and the problem they had.
- Separate what caused them to buy from what is just common.
- Search for accounts and people with the causal traits.
- Check a sample by hand before writing to all of them.
Where does it go wrong?
When the shared traits are coincidences. Your best customers may all be in one city because a founder knew people there, not because the city matters. Lookalikes built on the wrong traits produce lists that look right and reply badly. Talk to customers about why they bought before you trust the pattern.
What about lookalikes of content and signals?
A lookalike can also start from posts or behaviour: people who engage with posts like the ones your best prospects engaged with. That finds people who care about the same problem, which is often a stronger signal than firmographics alone.
How Sellinger handles it
Sellinger has a Lookalike Signal among its LinkedIn intent signal templates, which creates a signal from example posts you have already found valuable. Sellinger has intent signals on LinkedIn with 26 ready made signal templates in 8 categories, included with every bundle. For account lookalikes, search companies and people by the same filters over a database of 700M+ contacts.
Common questions
Is lookalike prospecting the same as lookalike audiences in ads?
How many seed customers do I need?
Should lookalikes replace my ICP?
Sources and method
General prospecting practice. Sellinger signal templates from the product's template list and the fact register, checked 24 October 2026.
Related: Ideal customer profile, Firmographics, Buying signals, Build an ICP from a website URL.
