6 B2B Lead Databases You Can Use to Accelerate Sales

Sales still rewards the prepared, but staying prepared becomes a challenge once your lead list hits triple digits. Suddenly, you’re less “strategic seller” and more “digital detective,” chasing down contact info like it’s 2003.

Manually searching for emails might seem cheaper at first glance, but it’s a slow death for your sales. At some point, you need to stop playing spreadsheet whack-a-mole and get a proper B2B contact database.

We’ve shortlisted the six best ones, each one built to help get you out of the spreadsheet and back into real conversations.

1. Instantly Supersearch

Instantly Supersearch is sitting on a jaw-dropping 450 million contacts, but you don’t need a PhD in data mining to use it. You can search by role, industry, location, or company size, then push leads directly into your outreach flow without exporting CSVs. The leads come cleaned, checked, and ready to email.

What really saves time is how it layers info from multiple sources automatically, filling in missing info without you even asking. Say you need emails for marketing directors, but some records only have LinkedIn URLs. Supersearch grabs what’s missing automatically so your list isn’t half-baked before you even start.

To speed things up even more, you can plug in AI prompts to personalize those leads as you go, using OpenAI, Anthropic, Deepseek, and others. There’s no need for extra setup or integrations. And because it connects directly with Instantly’s unlimited sending setup, big sales teams can scale their outreach without hitting limits or swapping accounts.

2. Saleshandy

Saleshandy’s Lead Finder has got over 700 million contacts from 60 million companies worldwide. But what makes it worth your time is how quickly it gets you from “who do I even email?” to “let’s get this conversation started.”

Say you’re hunting for marketing directors in mid-size tech firms across the US. Saleshandy filters through job titles, locations, company size, and skills until it pulls up a list of leads that actually matter. Then it verifies every single email in real time, so you’re not left wondering if half your messages will bounce.

Here’s why that’s important: sending 1,000 emails without verification is a shot in the dark. With Saleshandy, those emails have a 95%+ accuracy rate, meaning you spend less time cleaning up your lists and more time booking meetings.

And when you spot a promising lead on LinkedIn, their Chrome extension lets you grab verified contact details. One thing to keep in mind: the free plan is pretty limited (just five leads a month), so if you’re just starting out or want to test the platform, it’s not going to get you far.

3. Lusha

Lusha promises a hefty database of 135 million contacts, mostly spread across North America and Europe. You get the basics: emails, phone numbers, company info, plus job change alerts and intent data. Plus, it ticks the boxes for GDPR, CCPA, and ISO 27701 compliance, which means you’re playing by the rules while you reach out.

The filters cover the essentials (location, industry, company size), with extras like technology stacks and recent funding rounds. That means you could target European startups that just landed Series A funding and use specific CRMs, so your outreach hits the right inbox at the right moment.

Getting started feels simple, even if you’ve never touched a lead database before. However, some of the data can feel stuck in time. And when speed and accuracy matter, outdated info is a pain your sales team doesn’t need.

4. Snov.io

Snov.io is a solid B2B contact database designed for small businesses. You can search leads based on everything from job title to tech stack, then build lookalike lists with a few clicks. Need cold emails for a niche B2B segment? Snov gets you there faster than most tools in its weight class.

The built-in CRM is surprisingly capable, so you’re not switching from tool to tool just to keep track of your pipeline. And if you ever get lost in the feature set (because yes, there are a lot), the support team tends to show up before you even finish typing your question.

That said, it skips phone numbers entirely, which might be a dealbreaker if you rely on multi-channel outreach. Also, while most of the email data holds up, a few stale entries do sneak through.

5. LeadIQ

LeadiQ is built for speed and for reps who don’t have time to mess around. It grabs verified B2B contacts fast, alongside useful signals like job change, technographics, and more. There’s also intent data and buying signals if you’re the type to chase leads while they’re still warm. Upload a CSV, and it’ll bulk enrich your list. Set a few rules, and it’ll trigger outreach before you’ve even cleared your morning notifications.

The Chrome extension lets you pull data straight from LinkedIn and sync it with your CRM in seconds. And with real-time enrichment, you’re not stuck manually updating contact records ever again.

Still, for all its polish, the phone number accuracy lags behind the rest of the data. And if exporting lists is your thing, you may find the restrictions a little too tight.

6. Dealfront

While other platforms scatter their focus across continents, Dealfront leans hard into European data, offering over 180 million contacts and 40 million companies with filtering options sharp enough to slice through even the most obscure ICP.

But the real value isn’t just in who’s in the database. Dealfront connects the dots between web visits, intent signals, and trigger events (like funding rounds or leadership changes), so you’re stepping in while interest is already warm.

Let’s say someone from a mid-sized fintech company hits your pricing page twice in one week after a new CTO was appointed. Dealfront can surface that, highlight the visit, and show exactly how they got there. It’s the kind of visibility that makes cold outreach feel far less cold.

On the downside, the UI takes some getting used to. And unless you integrate with a CRM, managing follow-up can feel awkward.

Final Thoughts

Sales is one of those things that sounds simple until you’re knee-deep in spreadsheets and outdated emails. Sure, you could keep digging for contacts the old-fashioned way, but why would you? These B2B databases are built to get you in front of the right people faster.

But the truth is, no tool will do the real work for you. The data gets you started. Success comes down to how you engage, what you say, and when you reach out. So, if you want results, the next step is figuring out how to talk to them when your prospects answer.