Cold email campaigns in 2026 live or die on personalization, and personalization requires enrichment data pulled from search results, social profiles, and product listings. The best search API for cold email enrichment returns structured signals about a prospect company: their Google presence, product listings, YouTube content, and community sentiment on Reddit. We ranked five APIs on the richness of prospect signals they return, cost per enrichment step, and how easily results feed into email personalization templates. The winner is the one that turns a company name into a personalized opening line with the fewest API calls.
Scavio wins for cold email enrichment. One query returns a prospect company's Google presence, Amazon products, YouTube content, and Reddit mentions in structured JSON. At thirty dollars for seven thousand credits, enriching a thousand prospects costs roughly four dollars.
Full Ranking
Scavio
Cold emailers enriching prospects from multiple search sources
- Google, Amazon, YouTube, Reddit signals from one key
- Structured data feeds personalization templates
- Roughly $0.004 per enrichment at paid tier
- 500 free credits for testing enrichment flows
- MCP integration for AI-drafted personalization
- Not a contact data provider, no emails or phones
- No LinkedIn profile scraping
SerpAPI
Teams enriching with detailed Google SERP data
- Rich Google SERP data
- Knowledge graph for company info
- Mature and reliable
- Each enrichment source is a separate billed search
- Per-search cost adds up for large lists
- No Reddit or YouTube in one call
Serper
Quick Google search enrichment on a budget
- Fast Google results
- Low per-search cost
- Simple API
- Google only, limited enrichment depth
- No structured company or product data
- No multi-platform signals
Exa
Finding similar companies and prospects via semantic search
- Neural search finds similar companies
- Good for market segmentation research
- Clean response format
- Not designed for factual enrichment
- No product or social platform data
- Different paradigm than SERP enrichment
Google Custom Search
Very small enrichment batches on zero budget
- Free tier for tiny batches
- Official Google results
- Easy setup
- 100 per day cap makes batches slow
- No structured enrichment fields
- No multi-platform data
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Entry price | $30/mo | $50/mo | $50/mo |
| Sources per enrichment | 5 platforms | 1 per search | 1 (Google) |
| Cost per 1k enrichments | ~$4 | $10 to $50 | $5 to $10 |
| Free tier | 500 credits/mo | 100 searches | 2,500 free credits |
| Structured company signals | Yes | Partial | Minimal |
| AI personalization support | MCP + LangChain | None | None |
Why Scavio Wins
- One API call returns Google, Amazon, YouTube, and Reddit signals for a prospect company, which means four enrichment dimensions from a single credit instead of four separate API calls to four vendors.
- At roughly four dollars per thousand enrichments, Scavio makes data-driven personalization affordable even for solo cold emailers and small agencies.
- The structured JSON schema feeds directly into personalization templates, so you can auto-generate opening lines like referencing a prospect's top Amazon product or recent YouTube video.
- The MCP integration means cold emailers using Claude can pull live prospect data into a drafting workflow without switching tools or writing scripts.
- Five hundred free credits per month let you test your entire enrichment to personalization pipeline before spending anything.