Email Verification
Requiems API vs ZeroBounce
ZeroBounce focuses exclusively on email verification with 99% accuracy claims, catch-all detection, and spam-trap identification. A solid specialist β but you'll need additional vendors for IP, phone, and other data.
One key for everything
ZeroBounce is email-only. Requiems API covers email, phone, IP, finance, and more β one subscription, one integration.
Consistent API shape
Every Requiems API endpoint shares the same auth, error codes, and envelope structure. ZeroBounce each product has its own quirks.
No credit-pool anxiety
ZeroBounce sells credits that expire. Requiems API bills per call with a monthly free tier β use it when you need it.
Feature comparison
| Feature | Requiems API | ZeroBounce |
|---|---|---|
| Syntax validation | ||
| DNS / MX record check | ||
| SMTP verification | ||
| Catch-all detection | ||
| Disposable email detection | ||
| Role-based address detection | ||
| Bulk list verification | ||
| Real-time API | ||
| Webhook on completion | ||
| IP geolocation | ||
| Phone validation | ||
| Finance / BIN lookup |
Benchmarks
- Latency (p50)
- ~120ms p50
- Uptime SLA
- 99.9%
- API coverage
- 100+ APIs
- Free tier
- 500 req/mo
- Latency (p50)
- ~180ms p50 (est.)
- Uptime SLA
- 99.9%
- API coverage
- ~8 email endpoints
- Free tier
- 100 credits
Philosophy
ZeroBounce built a premium single-purpose tool. Requiems API is built on the idea that developers shouldn't manage five API keys and five invoices to validate the same form submission. We cover every data signal you need β email, phone, IP, and more β through one consistent interface, priced on actual usage.
Migrating from ZeroBounce
-
1
Replace `api.zerobounce.net` base URL with `requiems.xyz`
-
2
Swap `apikey` query param for `requiems-api-key: <key>` header
-
3
Map `status` field: ZeroBounce `valid` β Requiems `deliverable`; `invalid` β `undeliverable`
Ready to switch from ZeroBounce?
500 free API calls per month, no credit card required. Migration takes under an hour.