The best B2B enrichment tools
Ok you want to build a prospect list - that's dope! But which tools are the best and cost efficient for that?
3/10/20263 min read
The Best B2B Data Enrichment Tools
So, your sales team has finally decided to start prospecting B2B companies by phone and email!
But how do you find the right people to contact? And once you know who you want to reach, how do you find their contact details?
Building a B2B prospecting list isn't that simple. It's the first step in the prospecting process, and also the most important one.
Once you've got the basics right, the next question is: which tools should you use?
Don't worry, I've put together a list of the best data enrichment tools for different purposes, explaining their similarities and differences.
We'll start with phone number enrichment tools, then move on to email enrichment tools.
This article will be short but packed with useful information!
1. The Best Tools for Finding Mobile Phone Numbers
If you want to do B2B cold calling, you need your prospects' mobile phone numbers. This is extremely important!
Several tools offer mobile number discovery, but data quality varies significantly.
There are two main criteria for measuring data quality:
Coverage rate: The percentage of mobile phone numbers successfully found within a prospect list. A good coverage rate should be at least 70%.
Invalid number rate: The percentage of incorrect or inaccurate phone numbers. A premium tool should have fewer than 10% invalid numbers in its database.
There was a time when Kaspr was a good tool for finding mobile numbers.
Those days are gone. Its database seems to have deteriorated significantly over time. Its coverage rate appears to have dropped from around 60–70% to approximately 30–40%.
The best tool, combining an extremely high coverage rate with a very low percentage of incorrect numbers, is undoubtedly Fullenrich.
Very few of the numbers it provides are inaccurate.
However, Fullenrich is honestly quite expensive: €255 excluding VAT for 500 phone numbers.
My current preference is Get Eficia.
It offers a high coverage rate, almost comparable to Fullenrich. However, the phone number accuracy isn't quite as good, with around 20–30% of numbers being incorrect.
Still, at €140 for 500 phone numbers, it clearly offers the best value for money.
Indeed, Eficia is almost twice as cheap as Fullenrich, meaning you can get nearly twice as many phone numbers for the same budget.
There's another tool worth mentioning, although I've never used it because it's very expensive: Cognism.
This solution is designed more for companies with substantial budgets, as its plans are billed annually. The cheapest plan appears to cost around $15,000.
Unless you have money to burn, I'd recommend Get Eficia. Fullenrich is also an option if you really want to go the extra mile in terms of prospecting data quality.
2. The Best Tools for Finding Email Addresses
When it comes to email addresses, data quality is even more important.
Sending emails to invalid addresses damages your domain reputation and negatively impacts the deliverability of your cold email campaigns.
Fullenrich provides good-quality email addresses, but compared with other solutions, it's ridiculously expensive.
For example, Fullenrich charges €104 for 2,000 email addresses, whereas Apollo.io charges just $50 for 2,500 very high-quality email addresses.
That's another cost reduction of almost 2x.
Apollo is also an excellent tool for estimating your addressable market and scoring your prospects, which can significantly improve your qualified meeting-booking rate.
Even though Apollo provides very high-quality email addresses, you absolutely need to minimize your bounce rate when running B2B cold email campaigns.
That's why I recommend running your email lists through a verification tool such as ZeroBounce. It's not particularly expensive, and it simply checks whether the email addresses are valid.
This way, you can keep your bounce rate below 2% and maintain your email deliverability.
In other words, your emails are much less likely to end up in spam and have a better chance of actually being read by your prospects.
3. Other Great Sales Tools
One of the biggest challenges when cold calling heavily targeted audiences (which includes the vast majority of senior executives) is that they almost never answer their phones.
Without realizing it, you can end up spending 70–90% of your time calling phone numbers one by one, with nobody picking up.
There's a specific type of tool that can solve this problem: parallel dialers.
For example, Flunter, which is apparently one of the cheapest parallel dialers currently available in France while still offering good quality, can allow you to make as many calls in one hour as you would normally make during an entire day of prospecting.
Here's how it works:
The tool calls several phone numbers simultaneously. As soon as someone answers, all the other calls are automatically stopped.
You can typically call between 2 and 5 people at the same time.
For certain target audiences, such as HR Directors, who almost never answer their phones, this is absolutely essential if you want to have enough conversations throughout the day.
When prospecting HR Directors, it's not unusual to have to make 400 calls just to get 25 people on the phone!
Conclusion
To sum up, as of March 2026, my recommendations are:
Best tool for B2B phone number enrichment: Get Eficia.
Best tool for B2B email enrichment: Apollo.io.
However, be careful when using Apollo's enrichment features, as the pricing can be tricky.
You may need to manually disable the waterfall enrichment option, which is enabled by default and can significantly increase your data enrichment costs.
And if you'd rather avoid dealing with all these tools yourself and work with someone experienced who builds their own prospecting lists, feel free to book a meeting with me below.