Bought lists are stale, shared, and full of bounces. Build a fresh list from public sources instead, so every contact has a real, current route and a reason it fits your offer.
Use these findings as context, not promised results. Each source includes its sample or method and the limitation that matters when applying it.
Personalized email bodies were correlated with 32.7% more replies, while only 8.5% of the analyzed outreach messages received a response.
Across 2025 campaigns, 34,393 replies from 7,530,489 sends produced a 0.45% reply rate; companies with 11-50 employees replied at 0.49% versus 0.22% for enterprises with 10,000 or more employees.
A purchased list feels like a shortcut, but it arrives stale, resold to dozens of other senders, and full of addresses that bounce or belong to people who never opted in. High bounce rates hurt your sender reputation, and blasting a cold, shared list is the fastest way to land in spam. A smaller list you build yourself - where every contact is current and fits your offer - outperforms a big bought one on reply rate and deliverability.
Every business you want to reach leaves public evidence: a website, a contact page, a maps listing, a social profile, a directory entry. The work is turning that evidence into a clean, contactable list - defining who you want, collecting only public contact routes, and recording why each one fits. That is exactly what an AI lead search does: it fans out across public sources for a niche, keeps only leads with a usable public email or phone, and gives you the source and match reason for each.
Sourcing is not the same as verifying. A name with an email is not a lead until you have confirmed the contact route is public and current and the fit signal is real. Open the source, check the email or phone still works, and drop anything that only loosely matches. A self-built list earns its advantage precisely because you reviewed it - skip that step and it is no better than a bought one.
A list built from public data is fresh, unique to you, and legal to use when you keep honest sender details and an opt-out. Because you chose every entry, you can open each message with a specific, true observation instead of a generic template - which is what actually earns replies. Over time you learn which niches return the most contactable leads, and the process compounds instead of decaying like a purchased file.
Rarely for cold outreach. Bought lists are shared, stale, and often non-consented, which drives bounces and spam complaints that damage your sender reputation. A smaller, self-built list of public contacts almost always performs better.
From public sources: company websites, contact pages, maps listings, directories, and social profiles. An AI lead search automates collecting these into a contactable list by niche, and a free tier lets you test a niche before spending.
Using public business contact routes for relevant, honest outreach is generally acceptable, but rules vary by country and channel. Always identify yourself, offer a working opt-out, and check the marketing rules where your recipient is based.
Start with 5-10 leads. A small batch tells you within a day whether the niche has enough public contact data and whether your angle lands, before you invest in scaling it.