SignalHire is a recruiting-focused B2B data broker that aggregates contact details on over 700 million professionals. Its customers — primarily recruiters, sales teams, and marketers — pay to see your work email, direct phone number, resume history, and LinkedIn activity. If you've been getting unusually well-targeted recruiter outreach, SignalHire is likely the source. This guide walks you through the opt-out process in 2026.
What is SignalHire?
SignalHire (signalhire.com) is a contact-discovery platform that combines LinkedIn scraping, purchased B2B datasets, and crowdsourced resume data. A single SignalHire record can include your name, current and previous employers, job titles, work email, personal cell phone, years of experience, skills, and sometimes a full resume export. It also tracks "signals" — things like recent promotions, job changes, or funding events at your company — to help recruiters time their outreach.
Recruiters aren't the only buyers
SignalHire is marketed to recruiters, but any paying customer can access the data — including scammers running business email compromise (BEC) campaigns, spear-phishing operators, and competitive intelligence firms. Removing your profile reduces risk from all of them.
Step-by-step: How to opt out of SignalHire
- Go to SignalHire's opt-out page. Visit signalhire.com/opt-out directly, or scroll to the SignalHire homepage footer and click Privacy → Opt Out.
- Choose the correct form. SignalHire separates forms by residency:
- California or Virginia residents: use the "Do Not Sell My Info" form at signalhire.com/do-not-sell/
- EU/UK residents: use the GDPR request form
- All other users: use the general opt-out form
- Enter your identifying information. Provide your full name, current employer, work email, and a LinkedIn profile URL if available. The more specific you are, the faster SignalHire can locate your record.
- Verify your identity. SignalHire will send a confirmation email. Click the verification link inside to prove you own the email address.
- Wait for processing. SignalHire processes requests within 7 to 14 days — faster for California/Virginia residents under state law timelines (45 days maximum).
Alternative: Email the privacy team
If the form is unavailable or you need to opt out multiple email addresses, email support@signalhire.com directly. Include:
- Your full name
- All email addresses you want removed
- All phone numbers you want removed
- A LinkedIn URL for identification
- The legal basis (e.g., "under the CCPA / GDPR / VCDPA")
What happens after removal
SignalHire will retain your email address on a suppression list to prevent re-ingestion of your data in the future. All other personal details are either deleted or anonymized. If SignalHire's scrapers encounter your profile again, the suppression list should — in theory — block it from being re-added.
Why they keep your email after "deletion"
Paradoxically, the only way for SignalHire to know not to re-add you is to remember that you opted out. This is standard industry practice across every major B2B data broker. The retained email is used exclusively for suppression and is not sold, shared, or processed for any other purpose.
Why your SignalHire profile may reappear
Suppression lists aren't perfect. Your profile can reappear if:
- You change employers — SignalHire's scrapers re-ingest your new public profile
- You update your LinkedIn and it triggers fresh data collection
- A licensing partner provides SignalHire with a new dataset that includes you
- Your company's team page lists your name and email publicly
A one-time opt-out is rarely permanent. Most B2B broker profiles reappear within 6 to 12 months.
The broader B2B broker problem
SignalHire is one of many overlapping B2B databases. If you're on SignalHire, you're almost certainly on:
- ZoomInfo — market leader in B2B contact data
- Apollo.io — sales engagement + database
- RocketReach — popular with inbound recruiters
- Lusha — Chrome extension overlay on LinkedIn
- Seamless.AI — AI-generated contact info
- Clearbit — enterprise enrichment (now HubSpot)
- Hunter.io — email pattern finder
Each of these has a separate opt-out process. To fully clean up your B2B footprint, you need to submit requests to all of them — and keep re-submitting, forever.
How PrivacyOn handles SignalHire
SignalHire is part of PrivacyOn's continuous-monitoring coverage. A single $8.33/month subscription covers SignalHire plus ZoomInfo, Apollo, RocketReach, Lusha, Seamless.AI, Clearbit, and 100+ consumer-facing brokers. PrivacyOn submits opt-outs on your behalf, handles verification emails, and re-submits whenever your profile reappears. Family plans cover up to five members.
Reduce future re-ingestion
Beyond opting out, you can reduce how often your profile reappears:
- Tighten LinkedIn visibility settings — hide email and phone from non-connections
- Use an email alias for public-facing professional work
- Ask your employer to remove personal contact info from the company "team" or "about" page
- Disable LinkedIn's "let recruiters know you're open" feature unless actively job hunting
Final checklist
- Choose the correct opt-out form based on your residency
- Submit with your full name, work email, and LinkedIn URL
- Verify via email within 24 hours
- Follow up with privacy@signalhire.com if not removed in 14 days
- Repeat for every other B2B broker
- Re-check every 90 days or enroll in continuous monitoring
SignalHire's opt-out is relatively friction-free, but it's just one tile in a much larger B2B data mosaic. The real win comes from covering the whole ecosystem at once.