Custom Prospect Lists Built With 99%+ Accuracy
Stop Wasting Budget on Bad Data. Our 20+ Person Data Team Combines Human Research With Premium Tools to Deliver Triple-Verified, Ultra-Clean Prospect Lists Tailored to Your Exact ICP.
Team Rocket provides a hybrid solution to your prospect data needs, underpinned by human-data-enrichment, research, and manual checks—combined with access to all the premium data banks and tools. We guarantee 99%+ accuracy, ensuring your outreach efforts are highly targeted for maximum engagement and successful conversions.
Why Most B2B Data Is Dangerously Inaccurate
The Problem:
According to HubSpot, email marketing databases naturally degrade by about 22.5% every year. Even within the most premium and expensive B2B data tools such as ZoomInfo, up to 25% of their emails will bounce. These inaccuracies are also further compounded in periods of recession, where vast numbers of people change companies and roles.
Why This Matters:
If that much bad data is entering into your funnels and CRM, you’re going to end up on blacklists, in spam boxes, and suffering from a high degree of wastage at a time when it’s critical to be targeting with precision—especially on platforms like LinkedIn that heavily limit the number of prospects you can reach out to.
Why Choose Team Rocket For Custom List Building
Hybrid Solution: Human Research + Premium Tools
Team Rocket combines human-led research, data enrichment, and manual verification with premium data tools to deliver fast, accurate, and reliable prospect data.
Our in-house team of 20+ data specialists combines and verifies data from multiple sources to build a tailored, high-quality prospect database for your business.
99%+ Accuracy Guarantee
What sets us apart is our commitment to data accuracy, delivering 99%+ accurate prospect data for highly targeted outreach and better conversions.
By combining smart automation with manual enrichment from our in-house experts, verified email checks, and continuous data updates, we maintain industry-leading accuracy across every campaign.
Fully Customised to Your ICP
We believe one size never fits all. Our custom list-building service gives you complete control to define precise data criteria, ensuring every list is purpose-built around your business goals.
We tailor each dataset using detailed firmographic, technographic, and demographic filters, delivering highly relevant, decision-ready contacts that improve targeting, engagement, and conversion outcomes.
Trusted Data Partner for 300+ B2B Companies
20+ in-house data specialists supporting research and enrichment operations.
99%+ data accuracy guarantee maintained through continuous validation processes.
300+ clients served across 20+ countries and multiple industries.
Access to Apollo, Cognism, ZoomInfo, and Anymail data platforms.
500,000+ verified contacts delivered for high-performing B2B outreach campaigns.
What Makes Our Data Superior to Off-the-Shelf Solutions
Feature |
Team Rocket |
ZoomInfo/Apollo |
|---|---|---|
| Accuracy Rate | 99%+ guaranteed | 75-85% typical |
| Human Verification | 20+ specialists | Minimal/None |
| Customisation | Fully tailored | Pre-set filters only |
| Data Sources | Automated + human research | Single database |
| Email Verification | Triple-verified | Single-check |
| Cost | Pay for quality | Pay for quality |
Our Email Outreach Process
Consultation & ICP Definition
We start by understanding your unique data needs, including your target audience, industry, and specific criteria. We work with you to define your ideal customer profile in granular detail—firmographic filters (company size, industry, revenue, location), technographic filters (tech stack, software used), and demographic filters (job titles, seniority levels, department).
What you get:
- Detailed ICP documentation
- Firmographic, technographic, and demographic criteria defined
- Target persona profiles with specific job titles and roles
- Geographic and industry parameters
- Company size and revenue ranges
Multi-Source Data Aggregation
Our team of data experts leverages multiple premium data sources and platforms. Our data arsenal is fortified with insights from renowned platforms such as Apollo.io, Anymail, Cognism, and ZoomInfo. Leveraging the strengths of these industry leaders, we curate comprehensive datasets that provide a nuanced understanding of your target audience.
What you get:
- Data pulled from multiple premium sources (Apollo, Cognism, ZoomInfo, Anymail)
- Comprehensive coverage across all your ICP segments
- Both firmographic and contact-level data
- Initial prospect universe aggregation
Human Research & Enrichment
At Rocket, our in-house experts refine datasets sourced from multiple platforms. Their meticulous work ensures that the data we deliver is not just accurate but refined to the highest standards. Our 20+ person data team manually verifies company information, enriches contact details, and cross-references data points to ensure accuracy.
What you get:
- Manual verification by 20+ data specialists
- Contact detail enrichment (work emails, LinkedIn URLs, phone numbers where available)
- Company information validation
- Missing data fields filled in through human research
- Cross-referencing across multiple data sources
Triple Verification & Quality Assurance
We meticulously verify and validate the data to ensure its accuracy and reliability. Every list we build undergoes rigorous verification processes to guarantee that you’re working with reliable information. We verify email deliverability using our own exclusive tool where every email is checked. Our internal workflows ensure the data goes through rigorous checks and levels of verification.
What you get:
- Email deliverability verification (bounce rate testing)
- Phone number validation where applicable
- LinkedIn profile verification
- Company website cross-checking
- Final quality assurance review
- 99%+ accuracy guarantee
Segmentation & Delivery
Once your custom list is ready, we deliver it to you in your preferred format, making it ready for immediate use in your campaigns or strategies. We segment the list based on your campaign requirements—by persona, geography, company size, or any other criteria you specify.
What you get:
- Segmented prospect lists (by persona, geography, industry, etc.)
- Delivery in your preferred format (CSV, Excel, CRM upload)
- Full data transparency (all fields visible)
- Ready for immediate use in campaigns
- Complete data ownership
Frequently Asked Questions about our Email outreach methodology
How accurate is your data really?
How long does it take to build a custom list?
What data sources do you use?
Can you append data to our existing lists?
What format do you deliver the data in?
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