Finding the right CTO email list provider can make or break your technology executive outreach campaigns. CTOs control technology budgets, architecture decisions, and vendor selection—but reaching them requires precision targeting and verified contact data that actually works.

Most providers promise accuracy but deliver recycled lists with outdated contacts and poor deliverability. You need verified, actionable CTO data—not just impressive database numbers.

We tested 13 CTO email list providers to help you find the best solution for accurate, compliant technology executive outreach.

Ready? Let's go!

TL;DR

• ListKit — Triple-Verified data + intent filters; best for CTO outreach
• Apollo — Comprehensive sales platform; best for all-in-one prospecting
• ZoomInfo — Enterprise-grade database; best for large organizations
• Lusha — LinkedIn integration; best for social selling
• Clearbit — API-first enrichment; best for developers

Quick Comparison Table

1) ListKit – The best way to get CTO emails that are Triple-Verified (including phone numbers)

Rating: 4.8/5 (500+ reviews)

ListKit leads the market for agencies, SaaS teams, and B2B companies seeking verified CTO contacts without manual data cleaning hassles.

With access to 626M+ Triple-Verified business contacts, ListKit provides both emails and phone numbers for technology executives. Combined with real-time Intent Data filters, it helps identify CTOs actively researching technology solutions.

Key Features:

• Triple-Verified CTO emails and direct phone numbers – Multi-step verification ensures 95%+ accuracy for technology executive outreach, protecting sender reputation and eliminating bounced emails
• Real-time Intent Data filters for CTO targeting – Identify CTOs actively researching cloud infrastructure, DevOps tools, or enterprise software solutions
• Private cold email infrastructure – Maintain high deliverability with dedicated IPs and built-in reputation protection for large-scale CTO campaigns
• Unlimited exports with higher plans – Scale outreach without per-contact charges or hidden fees
• Native CRM integrations – One-click push to HubSpot, Salesforce, Zapier, SmartLead, and 15+ platforms

How to find emails of CTOs in "buying mode" with ListKit (in three steps)

Intent data reveals when technology executives are actively researching solutions like yours. For CTO outreach, this means targeting decision-makers already evaluating tech tools—dramatically increasing response rates.

1. In ListKit's Intent Data tab, select CTO-relevant topics like Cloud Migration, API Management, and Cybersecurity Solutions.

• Pro tip: Use ChatGPT to brainstorm intent topics specific to technology challenges.

2. Filter for CTO / Chief Technology Officer / VP Engineering job titles (plus industry & company size if needed).

3. Export Triple-Verified emails & phone numbers (95%+ accuracy) for immediate outreach. Refresh daily for a constant flow of new in-market CTOs.

Try 50 free CTO emails, then pricing starts at $97/mo

What else can you do with ListKit?

Beyond CTO lists, ListKit offers private cold email infrastructure, unlimited intent data, and hands-on support to maximize your technology executive outreach ROI.

2) Apollo – Comprehensive sales platform with CTO targeting

Rating: 4.6/5 (1000+ reviews)

Apollo combines B2B prospecting with sales engagement tools, making it popular among teams wanting an all-in-one platform. With 210+ million contacts and comprehensive filtering options, Apollo offers solid CTO targeting alongside sequence automation.

Key Features:

• 210+ million contact database with advanced filtering by job title, seniority, and company characteristics for precise CTO targeting
• AI-powered email writing and sequence automation to scale personalized outreach to technology executives
• Chrome extension integration for LinkedIn prospecting and real-time contact enrichment on company websites
• Built-in dialer and call recording for multi-touch campaigns combining email and phone outreach to CTOs
• Comprehensive CRM sync with Salesforce, HubSpot, and other platforms for seamless workflow integration

Considerations before going with Apollo:

Users frequently report data accuracy issues, with some experiencing bounce rates of 20-30%. The platform can feel overwhelming for simple list building, and many features require higher-tier plans.

Pricing starts at $49/mo

Apollo offers a freemium model with paid upgrades for advanced features:

Thinking about Apollo? Check out 11 better alternatives first.

3) ZoomInfo – Enterprise-grade CTO database

Rating: 4.4/5 (2000+ reviews)

ZoomInfo provides one of the largest B2B databases with extensive CTO coverage, particularly strong for enterprise teams with complex targeting requirements. Their platform combines contact data with intent signals and technographic information.

Key Features:

• Massive B2B database with comprehensive CTO coverage across industries and company sizes
• Advanced intent data integration to identify CTOs showing buying signals for technology solutions
• Technographic and firmographic filters for precise targeting based on company technology stack and characteristics
• Website visitor identification to track when target CTO companies visit your site
• Enterprise-grade compliance with GDPR, CCPA, and other data protection regulations

Considerations before going with ZoomInfo:

ZoomInfo requires significant investment with enterprise-level pricing that can reach $20-50K annually. Data accuracy varies, and many users still need additional verification tools.

Pricing is not public

ZoomInfo requires contacting sales for custom enterprise quotes. However, third-party sources estimate contracts range from $15,000–$50,000 annually, depending on features and user count.

ZoomInfo contracts too steep? Here are 11 tools that won't break the bank.

4) Lusha – LinkedIn-focused CTO prospecting

Rating: 4.3/5 (800+ reviews)

Lusha specializes in LinkedIn-based prospecting with a Chrome extension that reveals CTO contact information directly on LinkedIn profiles. It's particularly useful for teams that do most of their research on LinkedIn.

Key Features:

• LinkedIn Chrome extension for instant CTO contact reveal on LinkedIn profiles and company pages
• Email and phone number enrichment with verification to ensure contact accuracy
• Bulk enrichment capabilities for processing large lists of CTO prospects
• CRM integration with automatic contact sync to Salesforce, HubSpot, and other platforms
• Compliance-focused approach with GDPR and CCPA adherence for international prospecting

Considerations before going with Lusha:

Lusha's database is smaller than that of comprehensive platforms, and it's heavily dependent on LinkedIn for data sourcing. Credit-based pricing can become expensive for high-volume users.

Pricing starts at $22.45/mo

Lusha offers credit-based pricing with monthly subscription tiers:

For more LinkedIn-focused prospecting strategies, check out the complete guide to LinkedIn lead generation.

Before locking in Lusha, see how 11 alternatives stack up.

5) Clearbit – API-first CTO data enrichment

Rating: 4.2/5 (400+ reviews)

Clearbit takes an API-first approach to B2B data, making it popular among technical teams that want to integrate CTO data directly into their applications and workflows.

Key Features:

• API-first architecture for seamless integration into custom applications and sales automation platforms
• Real-time data enrichment that automatically appends CTO information to existing contact records
• Company and person data combination providing both CTO contact details and comprehensive company intelligence
• High data accuracy standards with multiple verification layers and regular data updates
• Developer-friendly documentation and robust API endpoints for custom CTO prospecting workflows

Considerations before going with Clearbit:

Clearbit requires technical implementation and is primarily designed for developers. It may not be suitable for teams wanting a simple, user-friendly interface for CTO list building.

Pricing is not public

Clearbit uses usage-based pricing that requires contacting sales. However, third-party sources estimate starting costs around $2,000–$10,000 annually, depending on API usage volume.

Clearbit feels heavy? Try these simpler, more agile options.

6) Cognism – GDPR-compliant CTO data in the EU

Rating: 4.5/5 (600+ reviews)

Cognism focuses on providing compliant B2B data with strong coverage in Europe and North America. Their platform emphasizes data quality and regulatory compliance, making it suitable for companies with strict data governance requirements.

Key Features:

• GDPR and CCPA compliant data with explicit consent tracking for international CTO outreach
• EU database coverage with a strong presence in North America, EMEA, and APAC regions
• Phone number verification, including mobile numbers for multi-channel CTO outreach
• Intent data integration to identify CTOs showing buying signals and sales triggers
• Advanced filtering options by seniority, department, company size, and industry for precise targeting

Considerations before going with Cognism:

Cognism requires custom pricing quotes and can be expensive for smaller teams. The platform focuses heavily on compliance, which may add complexity for simple prospecting needs.

Pricing is not public

Cognism requires contacting sales for custom quotes. However, third-party sources estimate contracts range from $6,000–$25,000 annually based on data volume and features.

Don't commit to Cognism until you've seen these alternatives.

7) RocketReach – Extensive CTO profile database

Rating: 4.0/5 (500+ reviews)

RocketReach maintains a database of 700+ million profiles across 35 million companies, offering broad coverage for CTO prospecting with both email and social media contact discovery.

Key Features:

• 700+ million profile database with extensive CTO coverage across industries and company sizes
• Bulk lookup capabilities for processing large lists of CTO names and companies
• Social media integration revealing CTO profiles across LinkedIn, Twitter, and other platforms
• Chrome extension for instant CTO contact discovery on websites and social profiles
• API access for integrating CTO data into custom applications and workflows

Considerations before going with RocketReach:

Data accuracy can vary, and the platform focuses more on contact discovery than verification. International coverage may be limited compared to specialized providers.

Pricing starts at $39/mo

RocketReach offers credit-based pricing with monthly subscription options:

When targeting technology executives, understanding the importance of pain points in sales prospecting can significantly improve your outreach success.

RocketReach on your shortlist? Here are the top alternatives worth a look.

8) Snov.io – All-in-one CTO outreach platform

Rating: 4.2/5 (400+ reviews)

Snov.io combines CTO contact discovery with email automation tools, making it suitable for teams that want both prospecting and outreach capabilities in one platform.

Key Features:

• Email finder and verifier with CTO-specific search capabilities and accuracy validation
• Automated email sequences for nurturing CTO prospects with personalized follow-up campaigns
• LinkedIn integration for discovering CTO contacts and automating connection requests
• Email warm-up tools to improve deliverability when reaching out to high-level executives
• Analytics and tracking for monitoring CTO outreach campaign performance

Considerations before going with Snov.io:

The platform tries to do many things, which can make it complex for users who only need CTO contact data. Email automation features may require additional setup time.

Pricing starts at $29/mo

Snov.io offers freemium pricing with paid tiers for advanced features:

For effective CTO outreach, avoid these common cold email mistakes that can hurt your response rates.

Struggling with Snov.io's data accuracy? These alternatives fix that.

9) Seamless AI – Real-time CTO data discovery

Rating: 4.1/5 (300+ reviews)

Seamless uses artificial intelligence to discover and verify CTO contact information in real-time, positioning itself as a modern alternative to traditional static databases.

Key Features:

• AI-powered real-time search that discovers CTO contacts as you search, rather than relying on static databases
• Chrome extension integration for finding CTO information on LinkedIn and company websites
• Automated list building with AI-driven suggestions for similar CTO profiles
• CRM integration with automatic contact sync and enrichment capabilities
• Team collaboration features for sharing CTO lists and coordinating outreach efforts

Considerations before going with Seamless AI:

Real-time discovery can be slower than traditional database searches. The AI approach may not always find comprehensive CTO information for all companies.

Pricing starts at $147/mo

Seamless offers subscription-based pricing with different feature tiers for real-time CTO discovery and AI-powered prospecting.

We tested Seamless AI against 11 tools — here's what we found.

10) UpLead – Real-time verified CTO contacts

Rating: 4.1/5 (250+ reviews)

UpLead focuses on real-time email verification and provides CTO contact data with high accuracy rates through their proprietary verification technology.

Key Features:

• Real-time email verification ensuring CTO contacts are valid and deliverable at the point of download
• Advanced search filters for targeting CTOs by company size, industry, technology stack, and location
• Chrome extension for finding CTO contacts while browsing LinkedIn and company websites
• CRM integrations with popular platforms like Salesforce, HubSpot, and Pipedrive
• Compliance features, including GDPR adherence and data processing agreements

Considerations before going with UpLead:

Database size is smaller than enterprise providers, and pricing can become expensive for high-volume users. Limited intent data capabilities compared to specialized platforms.

Pricing starts at $99/mo

UpLead offers tiered pricing based on contact credits and verification features.

Before paying UpLead's high price, see 11 cheaper alternatives.

11) Kaspr – LinkedIn Chrome extension for finding CTO emails

Rating: 4.3/5 (300+ reviews)

Kaspr focuses specifically on extracting CTO contact information from LinkedIn profiles through their Chrome extension, making it ideal for LinkedIn-heavy prospecting workflows.

Key Features:

• LinkedIn-focused Chrome extension for instant CTO contact extraction from profiles and search results
• Email and phone number discovery with verification to ensure contact accuracy
• Bulk export capabilities for processing multiple CTO contacts simultaneously
• CRM integration with automatic contact sync to popular sales platforms
• Workflow automation for streamlining LinkedIn-based CTO prospecting processes

Considerations before going with Kaspr:

Limited to LinkedIn-based prospecting, which may miss CTOs who aren't active on the platform. Database coverage is smaller than comprehensive providers.

Pricing starts at $51/mo

Kaspr offers freemium pricing with paid tiers for advanced features:

For LinkedIn-focused CTO outreach, explore these LinkedIn Sales Navigator alternatives for better targeting options.

Kaspr isn't your only option — meet the top 11 contenders.

12) LeadIQ – Workflow integration for CTO prospecting

Rating: 4.2/5 (350+ reviews)

LeadIQ streamlines sales workflows with a browser extension that captures CTO contact details directly while browsing LinkedIn, instantly pushing data into CRMs for efficient prospecting.

Key Features:

• Browser extension for capturing CTO contact details directly from LinkedIn and company websites
• Batch prospecting functionality to process multiple CTO contacts simultaneously for efficient outreach
• Social media insights providing details on CTO activities and company news for personalized messaging
• CRM integration with seamless data flow into existing sales workflows
• Prospect tracking with insights on CTO engagement and interaction history

Considerations before going with LeadIQ:

Primarily focused on workflow efficiency rather than database size. May require additional data sources for comprehensive CTO coverage.

Pricing starts at $60/mo

LeadIQ offers per-user pricing with enterprise options available for larger teams requiring advanced CTO prospecting capabilities.

Considering LeadIQ? These 11 options might fit better.

13) Adapt.io – Technographic targeting for CTO outreach

Rating: 4.1/5 (200+ reviews)

Adapt.io provides a B2B data platform with over 250 million contacts and 10 million company profiles, offering advanced technographic filtering perfect for targeting CTOs based on their technology stack.

Key Features:

• 250+ million business contacts with 10 million enriched company profiles for comprehensive CTO targeting
• Advanced technographic filters across 3,000+ specialized tech sectors for precise CTO identification
• Chrome extension for real-time contact discovery directly from LinkedIn and company websites
• Email finder with reliability scores ensuring CTO contacts are verified and deliverable
• CRM integrations with Salesforce, HubSpot, Pipedrive, and marketing automation platforms

Considerations before going with Adapt.io:

Newer platform with a smaller user base compared to established providers. Credit-based pricing may become expensive for high-volume CTO prospecting.

Pricing starts at $49/mo

Adapt.io offers flexible credit-based pricing:

For technology companies looking to generate more leads, check out our guide on how to generate more leads for SaaS companies.

Adapt.io on your shortlist? Here are the top alternatives worth a look.

Key Factors for Choosing a CTO Email List Provider

Before selecting a provider, understand what actually matters when targeting technology executives.

Data Accuracy & Verification

CTO outreach demands absolute precision—technology executives receive hundreds of vendor pitches weekly and have zero tolerance for irrelevant messages. Providers using Triple-Verification dramatically reduce wasted effort by delivering contacts validated at multiple checkpoints.

Here's what verification levels mean for CTO campaigns:

Technographic Data & Intent Signals

CTOs actively research technology solutions throughout the year. Intent data reveals when they're evaluating cloud platforms, DevOps tools, or security solutions—making them 5x more likely to respond than cold prospects.

Compliance & Deliverability

Technology executives are particularly sensitive to data privacy and compliance. Choose providers with clear GDPR, CCPA, and CAN-SPAM documentation, plus features supporting strong deliverability to executive inboxes.

Must-Haves vs Red Flags

The Verdict: Which CTO Email List Provider Should You Choose? (Our Top 3 Picks)

After testing multiple providers and analyzing user feedback, here are our top recommendations:

• ListKit – Best overall for Triple-Verified CTO data with intent filters, unlimited exports, and transparent pricing. The combination of accuracy, intent targeting, and native CRM integrations makes it ideal for agencies and SaaS teams serious about technology executive outreach.
• Apollo – Best for volume teams wanting an all-in-one sales platform with CTO prospecting capabilities. While data accuracy can vary, the comprehensive feature set and freemium model make it accessible for smaller teams.
• Cognism – Best for compliance enterprise teams requiring GDPR-compliant global CTO data. Strong compliance features and international coverage justify the higher price for regulated industries.

Ready to stop wasting time on bounced emails and outdated contacts? Try ListKit's Triple-Verified CTO lists today and see what accurate, intent-driven outreach can do for your pipeline.

FAQs About CTO Email List Providers