Business · head-to-head
Charity Search vs Tomba email finder
CharityAPI (rebranded from OrgHunter) looks up US nonprofits by EIN across basic profile, financial, geolocation, and NTEE-classification datasets, sourced from IRS filings and pitched at donation platforms and vetting tools. Its real backend at `data.orghunter.com` trades a query-string `user_key` for JSON responses and rejects unauthenticated calls with a 403, and offers free development-phase API keys with production usage gated behind paid or affiliate-only plans.
Tomba's Email Finder API discovers and verifies professional email addresses from a company domain or a person's name, and doubles as a B2B prospecting and lead-enrichment tool via linked domain-search and phone-finder endpoints. It authenticates with a paired `X-Tomba-Key`/`X-Tomba-Secret` header set rather than a single token, and a live Origin-header probe confirms it explicitly supports browser CORS, echoing the request Origin with credentials enabled on both a GET and an OPTIONS preflight.
| Charity Search | Tomba email finder | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | freemium | freemium |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
Tomba email finder supports CORS, while Charity Search doesn't — pick Tomba email finder for direct browser calls.