16 Best Email Finder Tools Comparison 2026 and Beyond

In a 400-billion-emails-a-day world, accurate contacts are your edge.

• Daily email volume is projected to rise from $361.6 billion in 2024 to $408.2 billion by 2027.
• Poor data quality costs organizations $12.9 million per year on average. 

That’s where email finder tools shine. These services sift through publicly available information on individuals, such as corporate websites and professional networks like LinkedIn, as well as social platforms and their own proprietary databases, to recommend possible business or personal email addresses. The best tools take it farther still: Recognizing common email patterns, checking legitimacy on a given address in real-time, providing means for bulk lookups or searches, and unearthing phone numbers, as well as social profiles, and connecting to CRM (or ATS). In 2025, SignalHire has plenty of company in a market that ranges from all‑in‑one platforms like itself to lightweight browser extensions like Clearbit Connect.

This ultimate guide compares 16 top email finder tools of the year 2025 and beyond. Every part walks you through the tool’s key features, data coverage, accuracy, pricing, and pros & cons.

Stay tuned!

How we selected and compared tools

This list of tools is based on SignalHire comparison and landing email‑finder research, as well as our analysis of the most used services for finding emails. Each software in the evaluation was assessed according to the following criteria:

• Data sources and coverage. The volume of the contact database, sources (public websites, social networks, and user‑contributed data), and an option to retrieve business and personal emails or phone numbers.

• Accuracy and verification. If the tool is for real‑time email validation or bounce-rate reduction. and provides confidence scores. For example, SignalHire provides email verification on searchable and touts over 95% accuracy.

• Features and ease of use. Chrome / Firefox extension, bulk search, name/position filters, domain lookup, phone‑number search, CRM integrations, and team collaboration capabilities.

• Pricing and free tier. How much is the cost per credit or subscription? Do they have a free plan? Many tools, including SignalHire, Hunter. io, and Clearbit Connect allow you to try the product by giving some free credits.

• Pros and cons. According to other independent reviews, strengths and weaknesses were highlighted: database size, user interface, hidden costs, and data quality.

16 Best Email Finder Tools

1. SignalHire

SignalHire is more than a simple email guesser; it is a full‑fledged B2B contact‑discovery platform used by over 3 million professionals. The service combines a massive database of 850 million profiles with sophisticated verification. SignalHire’s browser extension works across LinkedIn, Facebook, GitHub, and corporate websites to deliver verified emails and phone numbers with over 95% accuracy.

Key features

• Browser extension & dashboard: Once installed on Chrome or Firefox, the SignalHire extension allows one‑click extraction of emails and phone numbers from LinkedIn, Facebook, GitHub, and company websites. Results include job titles and social profiles.
• Real‑time verification: Every search goes through validation to ensure deliverability, leading to a 96 % hit rate. Credits are deducted only when a valid contact is found.
• Bulk email finder: Users can upload lists of up to 1,000 names, and SignalHire will return emails and phone numbers. Bulk results can be filtered by name, job title, location, and company size.
• Phone‑number lookup: SignalHire uniquely allows you to enter a phone number to uncover associated emails and social profiles. The feature leverages the same database used for email searches.
• Email Sequences: SignalHire’s Sequences feature automates outreach with multi-step campaigns. Users can create sequences inside the dashboard, add personalized emails with dynamic fields, set delays and stop-on-reply rules, and import prospects directly from Lead Lists or Job Projects. Campaigns can be scheduled for optimal times (e.g., Tuesday–Thursday mornings or afternoons), and analytics track sends, opens, replies, and bounces in real time. Best practices include 3–6 emails per sequence spaced 2–5 business days apart, with an automatic pause on reply for personal follow-up. Supported providers include Outlook/Office 365 and custom SMTP/IMAP.
• CRM and ATS integrations: The platform integrates with Salesforce, HubSpot, Recruit CRM, Zoho, and other tools, making it easy to sync newly found contacts.
• Free plan: New users receive 5 monthly credits on the web app or 10 credits with the browser extension. Paid plans start at $39/month and include features like bulk search, exporting to CSV, phone‑number discovery, and API access.
  

Pros

• High accuracy due to real‑time verification.
• Massive database (850 M+ profiles) and 96% hit rate.
• Chrome/Firefox extension for one‑click extraction from LinkedIn and GitHub.
• Bulk search and CSV export options for recruiting or sales campaigns.
• Free credits and transparent pricing; only successful lookups consume credits.
  

Cons

• The free tier is generous but limited; heavy users will need paid credits.
• Phone‑number lookup accuracy depends on data availability.
  

Pricing

More pricing details here.

Recommended for: recruiters, sales teams, and marketers who need reliable contact data with high accuracy and broad coverage. SignalHire’s combination of email, phone, and social discovery, plus robust verification, makes it the benchmark for email finder tools in 2025.

2. Adapt.io

Adapt.io, an email finder for sales and marketing. They have a free plan that allows for 25 email credits and 25 enrichment credits per month, as well as a Chrome extension. Paid plans provide more credits, phone numbers and advanced features.

Features and pricing

• A free plan which offers 25 email credits per month.

• Starter ($49/mo): Contact daily email credit: 500, Daily contacts: 50, CSV export and saved searches.

• Basic ($99/mo): 1,000 Email & 100 Phone credits, phone numbers access and CRM export.

• Custom plan: Job‑change alerts, suppression lists, team management, API access and advanced reporting can be customized.

Pros

• Very generous free tier (25 contacts/day)

• Integrated phone‑number data from Basic plan or above.

• Targeted campaigns with CRM export and ABM list building capabilities

Cons

• Bulk credits are paid; heavy users might pay high prices.

• More advanced features, like job‑change alerts, need the custom plan.

Best for: small to mid‑size sales teams that want a built‑in enrichment tool and phone numbers all in one.

3. Clearbit Connect

Clearbit has been offering B2B enrichment APIs for quite some time. That’s where the Clearbit Connect extension comes into play, bringing that power right inside Gmail. Clearbit Connect is a free Chrome extension that supports Gmail and lets you access verified email addresses and information about companies without leaving your inbox, according to Bardeen’s guide. Users are given 10 free credits a month, while each email reveal is one credit.

Features and Pricing

• Gmail integration: Click the Clearbit icon in Gmail, input a company domain and select your contact. The extension shows the individual’s email along with company information.

• Browser extension: Click the icon while browsing company websites outside Gmail for firmographics (size, revenue, technology), and view the “People” tab for employees.

• Free credits: 10 free reveals each month. Paid Clearbit Plans: Helping you Accumulate More Credits in Your Tools like Clearbit Capture & Reveal

Pros

• Free to begin entirely without providing credit card for basic use.

• Integrated within Gmail; no need to leave your inbox to find people.

• Offers company information in addition to email addresses.

Cons

• As you will have limited credits; serious prospectors [will need] to advance beyond the free tier very soon.

• The full suite on Clearbit can be pricey, and integration needs separate plans.

Best for: occasional users and smaller teams who want a simple Gmail add‑on to find a handful of verified emails every month.

4. ContactOut

ContactOut specialized for recruiting and sales prospecting. A Chrome extension and search portal also give users access to work and personal emails, phone numbers, and social profiles at 30 million companies. It leverages AI to verify data and provides bulk exports.

Pricing

• Free plan: 100 contacts a month on the Chrome extension.

• Sales package ($79/mo billed annually): Up to 6,000 email lookups per year. CRM and ATS integration.

• Recruiter package ($199/mo billed yearly): 12,000 email fwdesperados per year and 600 telephone numbers monthly.

• Team package: Contact for pricing, at higher volumes and deeper integrations.

Pros

• Less expensive than some enterprise platforms.

• AI‑powered verification.

• CRM/ATS integration.

• Bulk exporting.

Cons

• The free plan is quite restrictive.

• You must link a LinkedIn account.

• In some cases, data availability is less than consistent.

Best for: solo recruiters and small sales teams that want a cost‑effective solution to supplement both personal and business emails, with moderate search volumes.

5. Discoverly

Discoverly lightweight Chrome extension that scrapes various social media profiles and highlights cross-platform links. It covers LinkedIn, Facebook, Twitter and Gmail to show where contacts are active. The tool works well for when you want to research somebody’s social footprint.

Features and Pricing

• Social presence discovery: View LinkedIn information while reading emails in Gmail, and vice versa; Discoverly shows mutual friends and tweets across platforms.

• Profile enrichment: Save discovered profiles to export them for future use.

• Pricing: In 2025, The basic product is totally free but a premium version for saving contacts has yet to come out.

Pros

• Loads quickly.

• Easy to use.

• Cross‑platform insights.

Cons

• Rare profile mismatches, antiquated user interface.

Best for: Google or LinkedIn users who want to see the social footprint of their contacts. Discoverly is not an email finder but does provide good context to get you acquainted with prospects.

6. FindThatLead

FindThatLead has a pretty bright combination of domain search, bulk search, verification and a Chrome extension. It allows you to look up professional emails by name and company, and it comes with a message builder for customized outreach. FindThatLead has a free tool, free trial, pays from $15/month, no public API, and some data is outdated, according to a review by Popupsmart.

Features and Pricing

• Domain & bulk search: Discover new emails with either a company domain or through uploading lists.

• Enter the name of a person with their company and you will generate potential emails and social profiles.

• Email verifier: Verify email addresses to reduce bounce rates.

• Message Builder: The tool that allows you to write your cold outreach messages in the platform.

Pros

• Multiple search methods.

• Affordable entry‑level pricing

• Built‑in outreach tool.

Cons

• Lacks an API.

• Some accuracy issues.

• Less data than bigger providers.

Best for: small businesses and solopreneurs needing an affordable solution to search for B2B emails and send customized outreach.

7. HireEZ (formerly Hiretual)

HireEZ (renamed from Hiretual) is an AI‑powered recruiting platform that sources candidates across over 800 million profiles. It focuses on talent acquisition rather than general sales prospecting. Pricing isn’t publicly disclosed; organizations must contact sales for a quote.

Features

• AI sourcing and talent pool: The platform combs through various networks and resume databases to recommend candidates based on job criteria.
• Automated outreach: Allows recruiters to send multi‑channel campaigns (email or text) to candidates.
• Analytics and insights: Provides dashboards for pipeline metrics and diversity ratios, helping teams refine searches.
• ATS integrations: Integrates with major applicant‑tracking systems for streamlined workflows.

Pros

• Saves recruiters time through AI candidate discovery.
• Robust analytics.
• Scalable for large teams.

Cons

• Pricing is undisclosed.
• There is a steep learning curve and occasional data‑quality issues.

Best for: enterprise recruiting teams needing an AI‑driven sourcing platform. Because of the focus on recruitment rather than general business emails, hireEZ may not be ideal for sales or marketing outreach.

8. Hunter.io

Hunter is one of the most popular email discovery services, and its Chrome extension has 4.7 stars from over 12,000 reviews. The tool includes Domain Search, Email Finder, Email Verifier, and Campaigns to send cold outreach. Hunter claims a high match rate and emphasises deliverability by sending from your own Gmail/Outlook account.

Pricing

• Free plan: 50 searches per month.
• Starter (€49/mo): 2,000 searches per month; includes auto‑verification, lead enrichment, and unlimited team members.
• Growth (€149/mo): 10,000 searches per month and priority support.
• Scale (€299/mo): 25,000 searches per month and additional features.
  

Pros

• Widely used with a strong Chrome extension adoption.
• Domain search reveals all publicly indexed emails for a domain.
• Built‑in cold email campaign management and sequence tracking.
  

Cons

• The free plan provides a few searches.
• Bulk search limits may require expensive upgrades.
  

Best for: marketers and recruiters who regularly need domain‑level email discovery and built‑in outreach capabilities.

9. Lusha

Lusha positions itself as an AI sales‑intelligence platform with global coverage. It offers contact and company search, buyer‑intent signals, AI recommendations, and compliance with GDPR, CCPA, and ISO standards. Its database reportedly includes over 165 million profiles.

Pricing

• Free plan: 5 credits per month.
• Pro plan ($49.90/mo per user): 40 credits and list management.
• Premium plan ($79.90/mo per user): 80 credits, bulk search, and priority support.
• Scale plan: Custom pricing (around $1,140–$2,500 per user per year) with unlimited credits under a fair‑usage policy.
  

Pros 

• Global coverage and compliance with major data‑privacy regulations. 
• AI‑driven lead recommendations and email assistant.

Cons

• Credit‑based model can be expensive.
• Advanced features are unlocked only in high‑tier plans
• Hidden costs and limited free credits.

Best for: enterprises requiring high‑quality data and compliance assurances; less suitable for budget‑conscious teams.

10. Nymeria

Nymeria is a talent intelligence tool aimed at recruiters and sales professionals. It provides personal and work emails, mobile numbers, biographic data, social links and company firmographics. The platform offers unlimited team members across all plans and counts only successful lookups.

Pricing

• Nano ($39/mo): 100 credits.
• Micro ($79/mo): 300 credits.
• Kilo ($159/mo): 1,000 credits.
• Enterprise: custom pricing.
  

All plans include email and phone data plus unlimited team members. Users receive 5 free credits monthly, and only successful lookups consume credits.

Pros

• Rich data (emails, phone numbers, social links, and firmographics).
• Unlimited seats at all levels. 
• Credits are charged only when a contact is found.

Cons

• Pricing can add up for high search volumes.
• Limited integration options compared with larger platforms.

Best for: recruiting and sales teams that require both personal and work contact details and value unlimited seats on each plan.

11. RocketReach

RocketReach provides verified emails, phone numbers, and social profiles for professionals worldwide. It boasts a database of over 700 million professionals and 60 million companies. The platform offers advanced search with over 100 filters, intent data, an AI recommendation engine, deliverability monitoring, and a Chrome extension.

Pricing

• Essential ($80/mo or $48/mo if billed annually): 80 lookups.
• Pro ($150/mo or $108/mo annually): 200 lookups.
• Unlimited ($300/mo or $249/mo annually): 500 lookups and full API access.
  

Pros

• Large database.
• Real‑time email verification.
• Chrome extension. 
• Campaign tracking and CRM integration.

Cons

• Expensive compared with some competitors.
• Occasional inaccurate data.
• Advanced features are only in premium plans.
• Limited free trial.

Best for: mid‑size to large sales teams needing enriched contact profiles and advanced filters for targeted outreach.

12. SeekOut

SeekOut is an AI recruiting platform that offers two products: SeekOut Spot (an agentic recruiting service sold per candidate slate) and SeekOut Recruit (self‑service software). SeekOut Recruit requires a 3‑seat minimum and annual commitment. The platform claims access to 800 million+ candidate profiles and provides over 30 advanced search filters, conversational AI search, and automated outreach campaigns.

Features and pricing

• Spot: Pay per candidate slate; no annual contract.
• Recruit: Annual subscription with a 3‑seat minimum; includes advanced filters, AI search, and automated outreach. Pricing is available via sales.
  

Pros 

• Large candidate database.
• Robust AI search and filters.
• Integrated outreach.

Cons

• Pricing is undisclosed and likely expensive.
• Aimed primarily at recruiting rather than general email finding.

Best for: large recruiting firms looking for AI‑powered candidate sourcing with built‑in outreach. Not ideal for general sales use.

13. Skrapp.io

Skrapp is a lead search and enrichment tool used by 2 million+ professionals. It offers an email finder, lead search, email verifier, and Chrome extension. According to the company, the email finder has a 92% success rate, performing more than 5 million searches per day, while the email verifier reaches over 97% accuracy.

Pricing

• Free plan: 50 credits per month.
• Professional (€49/mo or €37/mo annually): 1,000 credits for up to two users, plus unlimited lead and company searches.
• Enterprise (starting at €99/mo): 5,000 credits and up to five users. Higher tiers offer 20K, 50K, and 100K credits with API integrations, SSO, and roll‑over credits.
  

Pros

• High search success and verification accuracy.
• Chrome extension for LinkedIn, plus website email extractor.
• Rolling credits and flexible tiers for growing teams.
  

Cons

• Emails per credit can be expensive at higher tiers.
• Data is primarily B2B; personal emails are limited.
  

Best for: sales and marketing teams that need reliable B2B email addresses and flexible credit tiers.

14. Snov.io

Snov.io is a multi‑feature SaaS platform that combines email discovery and outreach. A review notes the tool provides an email finder, LinkedIn prospect finder, Chrome extension, email verifier, cold email campaigns, multichannel outreach, LinkedIn automation, email deliverability check, email warm‑up, and a built‑in CRM.

Pricing

• Free plan: 50 credits per month.
• Starter ($39/mo): 1,000 credits and drip campaigns.
• Pro ($99/mo): 5,000 credits and more automation.
• Custom plan: tailored for enterprise needs with high‑level support.
• Annual subscriptions reduce costs by about 20%.

Pros

• Extensive feature set (cold outreach, CRM, email warm‑up, LinkedIn automation).
• Generous free plan and affordable entry pricing.
• Good customer support, according to reviewers.
  

Cons

• The interface can be overwhelming due to the many tools.
• Data accuracy may vary; personal emails may not be available for all contacts.
  

Best for: startups and small businesses wanting an all‑in‑one outreach platform with flexible pricing.

15. Swordfish AI

Swordfish AI is a contact extraction platform used for lead generation and prospecting. It helps professionals discover personal and business emails, direct dials, and cell phone numbers by searching across social media profiles and other sources. A SalesForge directory notes that Swordfish offers real‑time data validation, a Chrome extension for LinkedIn, Facebook, GitHub, and other sites, bulk data enrichment, and API access.

Pricing

Pricing is not publicly available; users must contact the company. The review points out that Swordfish lacks transparency, and credits can be limited.

Pros 

• High accuracy.
• Easy‑to‑use interface.
• Responsive support.

Cons

• No pricing transparency and limited credits.

Best for: organizations willing to negotiate pricing and requiring both personal and professional contact data.

16. ZoomInfo ReachOut (Chrome extension)

ZoomInfo is a well‑known B2B database provider; its ReachOut extension brings the power of ZoomInfo’s database directly into the browser. According to a BookYourData review, ReachOut overlays verified contact and company data, including emails, phone numbers, job titles, and firmographics, on websites like LinkedIn. A free pack provides 10 credits, and no payment is required. A pay‑as‑you‑go option starts at $99 for 250 credits. However, full ZoomInfo plans are expensive: the Professional plan costs roughly $14,995 per year, the Advanced plan about $24,995, and the Elite plan about $39,995.

Pros

• High‑quality data with firmographic details.
• Integration with LinkedIn and CRM.
• Free trial credits.

Cons

• Overall cost is extremely high.
• Annual contracts.
• Credit consumption adds up quickly.

Best for: established enterprises with large sales teams and budgets; not suitable for startups or budget‑constrained users.

17. Other notable tools (not ranked)

In addition to the main tools mentioned above, other email finders will work for specific use cases. These tools are mentioned in brief for the sake of completion:

• FindThat. This browser plugin provides basic name and domain search and email verification capabilities. Free tier is limited with paid plans starting from around $49/month Not as extensive as FindThatLead but similar.

• Dropcontact: A French data‑enrichment tool offering Europe‑friendly contact discovery and integrating with CRMs like Pipedrive.

• Voila Norbert: A top email finder for small teams with pay as you go pricing and accurate validation.

• Apollo. io: An email discovery tool with a sales engagement platform, free plan available along with advanced filters.

These tools are not discussed in detail here, as they are not included in the SignalHire comparison page list and fewer data have been verified so far.

Summary table

The table below consolidates key information for the 16 primary email finder tools. Prices reflect typical monthly costs (USD) and may vary by billing cycle.

Tool	Database	Free Tier	Starting Price	Notable Features	Recommended for
SignalHire	850 M+ profiles; phone numbers and social links	5 credits (web) / 10 credits (extension)	$39/mo	Browser extension for LinkedIn & GitHub; bulk search; phone & social discovery; 95 % accuracy	Sales, recruiting & marketing teams needing reliable, verified contact data
Adapt.io	B2B contacts with email & phone; integration with CRMs	25 credits & 25 enrichment credits	$49/mo	Chrome extension; CSV export; phone numbers in Basic plan	SMB sales teams needing enrichment and phone data
Clearbit Connect	Verified business emails via Gmail	10 credits/month	Paid plans via Clearbit	Gmail‑native lookup; company insights	Occasional lookups from Gmail
ContactOut	30M companies; work & personal emails	100 contacts/month	$79/mo (sales package)	AI verification; bulk exporting; CRM & ATS integration	Recruiters & small sales teams
Discoverly	Social profile insights across Gmail, LinkedIn, Twitter, Facebook	Free	Free	Social presence discovery; contact export	Job hunters & relationship‑building
FindThatLead	Domain & name search; small B2B database	Free version	$15/mo+	Message builder; email verifier	Solopreneurs and small marketers
HireEZ	800 M+ candidate profiles	None (contact sales)	Custom	AI sourcing; candidate outreach	Enterprise recruiting teams
Hunter.io	6 M+ users; domain & email search	50 searches/mo	€49/mo (≈$53)	Email verification & cold campaigns	Marketers wanting domain search
Lusha	165 M+ profiles	5 credits	$49.90/mo per user	Buyer intent signals; AI recommendations	B2B sales teams with compliance focus
Nymeria	Personal & work emails, phones & social data	5 credits/mo	$39/mo	Unlimited team members; firmographics	Recruiters needing comprehensive profiles
RocketReach	700 M+ professionals & 60 M companies	Limited	$80/mo	Advanced filters; intent data; API	Mid‑size sales teams
SeekOut	800 M+ candidate profiles	None	Custom	AI recruitment platform; advanced filters	Enterprise recruiting only
Skrapp.io	200 M professionals & 20 M companies	50 credits	€49/mo (≈$53)	92% success; API; roll‑over credits	B2B sales teams
Snov.io	Email finder, verifier & CRM with	50 credits	$39/mo	Multichannel outreach; LinkedIn automation	Startups needing all‑in‑one toolkit
Swordfish AI	Personal & business emails, direct dials, cell numbers	None	Custom	Real‑time validation; API; bulk enrichment	Large teams with custom budgets
ZoomInfo	Corporate emails, phones & firmographics	10 credits	Pay‑as‑you‑go $99/250 credits; full plans >$14k/year	Chrome extension; intent signals	Enterprises with large budgets
Clearbit Connect	Business emails & firmographics	10 credits	Paid via Clearbit	Gmail‑native search; company insights	Casual users & small teams

Choosing the right email finder in 2025

Selecting the best email finder depends on your goals, budget, and workflow. Here are a few scenarios:

• Recruiting & HR: SignalHire, Nymeria, hireEZ — on campaign and social profiles for your phone number and connect with your candidate through the telephone as well. SeekOut and hireEZ are more enterprise-focused solutions, whereas SignalHire is the best ally for teams of any size due to its free tier, excellent accuracy and affordable pricing.

• Sales & marketing SignalHire, RocketReach, Hunter. io, and Skrapp, all have scalable options and bulk searches perfect for lead generation. With SignalHire, you can have a more complete profile of target leads by combing through their phone‑number lookup and LinkedIn integration.

• Tools with low-cost entry plans and wide functionality — Snov. io, Adapt. io, and Hunter. io and other similar services are great for startups. The great thing here, too, is that as far as the initial price point is concerned, SignalHire translates aggressive free credits into a very low-priced option up and down the ladder.

• For occasional lookups: Clearbit Connect and Discoverly provides free or low-cost methods to get a few emails or view social profiles. These are great for regular people or those casually networking who a] arenot prospecting heavy-duty.

Final verdict: Why SignalHire leads the pack

SignalHire is the only email finder that has everything: high accuracy, millions of profiles in the database, phone‑number and social discovery, bulk search, and browser extension – all of this makes it the best email finder tool in 2025. Unlike most competitors, SignalHire verifies each contact in real-time and only charges credits upon a successful match. Top resources get 850 million+ profiles and a 96% hit rate — far better than the best email pattern guessing or outdated tools. Its free plan with plenty of credits means both startups and recruiters can try out its functionalities for free, with no strings attached.

Hunter.pro: Although other tools here do certain things better than Hunter. While there are many providers in this space: io for domain search, Lusha for buyer‑intent signals, hireEZ and SeekOut for enterprise recruiting, none of these platforms combine all of these features at such an affordable price point with the accuracy SignalHire offers. Shooting in the dark or throwing shit on the wall is no longer enough in the future of outreach — at least if you’re actually trying to reach someone. This requires contextualized verified contact data embedded with your workflow.

FAQs

Is there a totally free email lookup?

It should be noted that some email finder tools do provide a limited free tier, but unlimited free lookup is rarely offered to anyone as the feature costs money for maintaining the database. Most free alternatives have their searches restricted, accuracies well under 95%, or work only with generic company email patterns, while SignalHire offers 5 free contact credits every month at 95%+ accuracy rates. Paid tools always beat free tools when it comes to serious prospecting in terms of data accuracy, depth of coverage, and bulk lookup functionality, at least they do in our testing by October 2023.

Is it illegal to check someone’s emails?

Email finder tools find professional email addresses that are publicly available, and it is entirely legal to do so as long as the data being used is sourced via public records and licensed databases. Accessing someone else’s email account without permission is illegal based on laws such as the Computer Fraud and Abuse Act. There is nothing illegal about what tools like SignalHire do—scraping publicly-available contact info is as lawful for business uses as a digital phone book accessing your mailbox unauthorized is a crime.