Prospeo API
Prospeo REST API — email finder and sales intelligence platform that discovers and verifies professional email addresses from LinkedIn profiles and company domains, enabling agents to automate lead enrichment and outbound prospecting workflows.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
GDPR compliant — EU-based company with EU data processing. TLS enforced. API key with no scope granularity. Agents must ensure GDPR compliance in their use of discovered email data. No SOC2.
⚡ Reliability
Best When
You're automating B2B outbound sales prospecting and need to find verified professional emails from LinkedIn profiles or company domains at reasonable cost.
Avoid When
You need comprehensive contact data beyond email (phone, address, social) — use Apollo.io or Hunter.io for broader enrichment.
Use Cases
- • Agents enriching CRM leads with verified email addresses found from LinkedIn profile URLs via Prospeo
- • Domain prospecting — agents generating contact lists from company domains for outbound sales campaigns
- • LinkedIn automation — agents extracting emails from Sales Navigator search results at scale
- • Data enrichment pipelines — agents enriching contact records with professional email addresses from LinkedIn data
- • Lead qualification — agents verifying email deliverability before triggering outbound sequences
Not For
- • Consumer email finding — Prospeo focuses on professional B2B email discovery, not consumer/personal addresses
- • Phone number lookup — Prospeo is email-focused; use Apollo.io or ZoomInfo for phone enrichment
- • Large-scale bulk enrichment — Prospeo's credits model becomes expensive at millions of contacts; use specialized data providers
Interface
Authentication
API key from Prospeo dashboard. Passed as X-KEY header. Single key with full account access. Credit-based model — each API call consumes credits. No scope granularity.
Pricing
Credit-based pricing where each email find/verify consumes 1 credit. Unused credits roll over. Annual plans offer ~20% discount. Pay-as-you-go top-ups available.
Agent Metadata
Known Gotchas
- ⚠ Each API call consumes credits even if result is 'email not found' — agents should cache previous lookups to avoid duplicate credit consumption
- ⚠ LinkedIn URL format must be canonical (linkedin.com/in/username) — agents must normalize URLs before submitting
- ⚠ Email verification result has confidence scores — agents should threshold on score (>0.8) before adding to outreach lists
- ⚠ Rate limit (100 req/min) requires pacing for bulk enrichment — implement queue with rate limiter
- ⚠ GDPR compliance requires agents to have legitimate interest or consent basis before enriching contact data
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Prospeo API.
Scores are editorial opinions as of 2026-03-06.