Email Verification
Requiems API vs Mailboxlayer
Mailboxlayer (an APILayer product) provides real-time email validation via a simple URL-based API with syntax checks, SMTP ping, MX records, and a quality score. Free tier of 100 req/mo.
More endpoints, same simplicity
Mailboxlayer has one endpoint. Requiems API has 100+ with the same URL-based simplicity.
Better free tier
Mailboxlayer free = 100 req/mo. Requiems API free = 500 req/mo with no credit card required.
Active development
Mailboxlayer is a legacy APILayer product with slow updates. Requiems API ships new APIs monthly.
Feature comparison
| Feature | Requiems API | Mailboxlayer |
|---|---|---|
| Syntax validation | ||
| DNS / MX record check | ||
| SMTP verification | ||
| Catch-all detection | ||
| Disposable email detection | ||
| Role-based address detection | ||
| Quality / deliverability score | ||
| Did-you-mean suggestions | ||
| Bulk list endpoint | ||
| IP geolocation | ||
| Phone validation |
Benchmarks
- Latence (p50)
- ~120ms p50
- SLA de disponibilité
- 99.9%
- Couverture API
- 100+ APIs
- Niveau gratuit
- 500 req/mo
- Latence (p50)
- ~200ms p50 (est.)
- SLA de disponibilité
- 99.9%
- Couverture API
- 1 endpoint
- Niveau gratuit
- 100 req/mo
Philosophy
Mailboxlayer is a lean, low-cost validation endpoint ideal for simple syntax + SMTP checks. Requiems API takes a wider view: we ship the email endpoint you need plus IP, phone, finance, and text APIs — all through the same developer experience.
Migrating from Mailboxlayer
-
1
Replace `apilayer.net/api/check` with `requiems.xyz/v1/email/validate`
-
2
Swap `access_key` query param for `requiems-api-key: <key>` header
-
3
Map `format_valid` → `syntax_valid`; `smtp_check` → `smtp_valid`; `score` → `deliverability_score`
Ready to switch from Mailboxlayer?
500 free API calls per month, no credit card required. Migration takes under an hour.