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Prospecting tools help you answer two questions: who should we talk to, and how do we reach them. Small teams usually need one tool that does both reasonably well, plus a CRM to keep track of the conversations.
Pick by how you sell
- High-volume outbound → Apollo.io combines contact data with sequences.
- You already know the companies → Hunter finds and verifies the right email addresses.
- Relationship-led selling → LinkedIn Sales Navigator for research and warm outreach.
Data quality comes first
Every contact database has gaps. Verify emails before sending, keep bounce rates low, and remove contacts who don’t engage. Bad data hurts deliverability for your whole domain.
Follow the rules
In the U.S., commercial email must comply with the CAN-SPAM Act: honest headers and subject lines, your physical address, and a clear way to opt out that you honor promptly. If you prospect in Europe or Canada, stricter consent rules apply.
A simple outbound routine
- Define your ideal customer profile in writing.
- Build a small, verified list — quality beats volume.
- Write short, specific emails that reference something real about the prospect.
- Log every reply in your CRM and schedule the next step immediately.
The picks, side by side
Apollo.io
- Best for
- Outbound teams that want data and sequences in one tool
- Pricing
- Free plan available; paid plans add credits and features
What we like
- Large B2B contact database
- Built-in email sequences
- Chrome extension for LinkedIn and Gmail
Watch out for
- Data accuracy varies by market — verify before sending
- Credit limits on lower plans
Hunter
- Best for
- Finding and verifying business email addresses
- Pricing
- Free plan available; paid plans add searches and verifications
What we like
- Simple domain search
- Email verification built in
- Easy to learn
Watch out for
- Focused on email finding, not full prospecting
- Smaller feature set than suites
LinkedIn Sales Navigator
- Best for
- Account research and relationship-based selling on LinkedIn
- Pricing
- Paid plans; free trial often available
What we like
- Advanced search filters on LinkedIn's network
- Lead and account alerts
- Great for warm, personalized outreach
Watch out for
- No contact emails by default
- Subscription is per user
Frequently asked questions
Is cold email legal in the United States?
Commercial email in the U.S. must follow the CAN-SPAM Act — accurate sender information, honest subject lines, a physical address and a working unsubscribe. Other countries have stricter rules, such as GDPR in Europe.
Do I need a prospecting tool if I have a CRM?
A CRM manages the leads you have; prospecting tools help you find new ones. Many teams use both, connected by an integration.