Free B2B lead generation tools
Updated September 2026 // planning, naming and technical checks
Tools for B2B outreach: find business contacts, review your copy, and prepare domains and mailbox names. Contact Finder includes five searches per IP per 24 hours and three one-time email reveals, with no signup. Data handling is explained on each tool.
Choose the lead magnet picker for resource ideas, copy tools for message review, domain and mailbox generators for naming plans, infrastructure tools for technical checks, and the ROI calculator for scenarios.
FIND BUSINESS CONTACTS
B2B Contact Finder
Find a point of contact by company website and optional job title. Review matching names and roles, then reveal a business email.
Find a name, job title and business email by company website. Start with 3 email reveals without signup; a short form unlocks 5 more once. Up to 5 searches per IP per 24 hours. Shared networks share these limits.
EXPLORE TARGET COMPANIES
Prospect Sample Explorer
Browse 64 selected company examples across eight industries, with descriptions checked against their websites. Download a company sample, then use the contact finder on the same page.
Browsing companies uses no contact-search credits. Contact searches share the Contact Finder's existing limits: 3 email reveals without signup, 5 more once after a short form, and up to 5 searches per IP per 24 hours.
B2B Lead Magnet Ideas and Picker
Explore 40 lead magnet formats from ReplyLead’s idea library. Choose your industry, goal and project size to get relevant ideas, build outlines and a downloadable plan.
Cold Email Domain Generator and Fleet Planner
Generate relevant, non-branded sending-domain ideas with no repeated word families. Check registration records, review or replace individual domains, then transfer your included list to the mailbox generator.
Mailbox Name Generator
Turn selected domains and real sender names into a mailbox naming spreadsheet. Choose your total and mailboxes per domain, then download Excel or CSV. Connects directly with the domain generator; it does not provision mailboxes.
Cold Email Spam Checker
Scans cold-email copy against 1,130 spam-trigger phrases grouped by urgency, overpromise, money, salesy and list-mail language, highlighted live as you type, plus link, image, capitals, punctuation and subject-line checks.
Cold Email Grader
Grades a cold email against a working playbook: subject-line tests, the 80-word cap, 606 AI-writing tells, 480 fluff phrases, offer structure and the ask, then applies the mechanical fixes in one click.
Mail Provider Lookup
Enter any company domain to identify the mail environment behind it from public MX records - Google Workspace, Microsoft 365 or a security gateway - and what that environment means for legitimate outreach. Runs in your browser, nothing stored, no signup.
Email Deliverability Checker
Checks any domain's MX records, SPF record with its 10-lookup audit, DMARC policy, DKIM selectors, MTA-STS, TLS-RPT and BIMI, graded with the specific fix for each failure.
SPF and DMARC Record Generator
Builds a valid SPF TXT record and DMARC record from your sending providers, counting DNS lookups live against the limit of 10 that silently breaks SPF. Makes no DNS queries at all, so it cannot generate lookup traffic against your domain.
Email Header Analyzer
Paste raw email headers to get the SPF, DKIM and DMARC verdict, a DMARC alignment check across From, Return-Path and the DKIM signing domain, every delivery hop with its delay, and which of 12 security gateway vendors handled the message. Makes no network requests.
Cold Email ROI Calculator
Models pipeline from list size, deliverability, reply rate, meeting rate and close rate, so cost per meeting and break-even reply rate are explicit before you spend.
Rather we ran the whole thing?
We build and run B2B cold email end to end, copy, infrastructure and booking, and get paid on the revenue we help you close.
Apply to work with usFurther reading
The two questions these tools raise most often, answered in full.
Why verified lists still bounce — what a verification pass can and cannot tell you, and why a list that came back 98% valid can still burn a domain.
Cold email infrastructure — how sending domains, mailboxes, SPF, DKIM and DMARC fit together, and the order to set them up in.
Which checker do you need?
Checker, grader, analyzer: the names blur together, so route by the question you are actually asking. Every row runs in the browser and takes under a minute.
Every tool and research asset
All free, all browser-side, no signup. The research assets below are ReplyLead first-party data with methodology and limitations published alongside the numbers.
Score fit after defining your account criteria
The ICP scoring calculator adds weighted account fit, missing-evidence ranges, hard exclusions and an exportable scorecard. Use it when a pass/fail filter leaves several accounts to prioritize.
Check closer capacity and meeting criteria
The sales pipeline stall page asks whether the gap is the first conversation, the written test, or a full calendar. The qualified sales meeting criteria page writes the starting eight-test agreement. The closer capacity calculator turns hours, booked time, show rate, and acceptance rate into meetings that fit, held meetings, and accepted meetings.