Lead sourcing is the work of finding and collecting potential customers who match your ideal profile, together with the data you need to contact them. It comes before outreach and qualification: you can't email, call or score a lead you haven't sourced.
Lead sourcing vs lead generation
Lead generation is the whole process of creating interest and conversations. Lead sourcing is the first part: building the raw list. Inbound marketing generates leads that source themselves (they fill in a form). Outbound teams have to source leads actively.
Main ways of sourcing leads
| Method | Best for | Watch out for |
|---|---|---|
| Manual research (maps, directories, LinkedIn) | Local businesses, niche B2B | Slow; hard to scale past 50 a day |
| Scraping tools | Large local lists with websites and phones | Data needs checking; respect site terms |
| B2B databases | Titles, company size, tech stack | Outdated contacts; cost per seat |
| Done-for-you lists | Teams that want to sell, not research | Ask how leads are checked and if they're exclusive |
| Inbound forms and lead magnets | Warm leads who asked to hear from you | Takes months to build volume |
| Referrals and partners | High-trust deals | Hard to predict volume |
What data to collect for each lead
- Company name, website and industry
- Location (country, state, city)
- Contact name and role, if B2B
- Email and phone, both checked
- The signal: why this lead needs you now
- Source and date, so you know which channel works
A simple lead sourcing process
- Write your ideal customer profile and one buying signal.
- Pick one source and pull 100 leads.
- Remove duplicates and check emails and phone numbers.
- Add a one-line note per lead with the signal you saw.
- Load into your CRM and start outreach the same week; data goes stale fast.
Related: where to buy leads, B2B lead enrichment and lead generation tools.
Source leads three ways in one account: done-for-you lists, the Leads Hub and the LIVE Lead Scraper, with email and phone checks built in.
Start free — no card neededor claim up to 3,000 FREE credits with a paid planChoose how many leads you want to source each month:
Basic
$9.99/month
11,500 credits a month
+ 1,000 FREE credits
- About 261 done-for-you leads
- or 88 AI website previews
- All features included
Pro
$39/month
50,000 credits a month
+ 1,500 FREE credits
- About 1,136 done-for-you leads
- or 384 AI website previews
- All features included
Premium
$79/month
105,000 credits a month
+ 3,000 FREE credits
- About 2,386 done-for-you leads
- or 807 AI website previews
- All features included
Frequently asked questions
What does a lead sourcing specialist do?
They research and build lists of potential customers that match the company's profile, collect and verify contact data, and hand clean lists to sales or outreach teams.
Is lead sourcing the same as prospecting?
They overlap. Sourcing builds the list; prospecting includes researching each lead more deeply and starting the first conversation.