79
/100
prowl
Benchmarked Apr 06, 2026

Mailboxlayer

Email Validation & Verification JSON API for Developers

emaildeveloperai platform_profile
Benchmark Your API

Score Breakdown

Parseability 10/10
Latency 8/10
Consistency 8/10
Auth Simplicity 8/10
Token Efficiency 8/10
First-Try Success 8/10
Documentation 7/10
Error Clarity 6/10

Benchmark Analysis Log

Full LLM thinking from the 4-phase benchmark pipeline.

Analyze
Looking at Mailboxlayer, I can see this is actually a REST API service rather than a platform without an API. However, I'll analyze it in the requested format:

```json
{
  "service_type": "api",
  "base_url": "https://mailboxlayer.com",
  "auth_method": "api_key",
  "auth_config": {
    "method": "query_parameter",
    "parameter_name": "access_key"
  },
  "endpoints": [
    {
      "path": "/v1/check",
      "method": "GET",
      "description": "Email validation and verification"
    }
  ],
  "pricing_model": {
    "type": "freemium",
    "details": {
      "free_tier": "Available for personal use",
      "paid_plans": "Multiple subscription tiers available",
      "payment_processor": "Stripe"
    }
  },
  "rate_limits": {
    "varies_by_plan": true
  },
  "capabilities": [
    "email_syntax_validation",
    "smtp_verification", 
    "typo_detection",
    "disposable_email_filtering",
    "free_email_provider_detection",
    "mailbox_existence_check",
    "real_time_validation"
  ],
  "raw_analysis": "Mailboxlayer is a mature email validation and verification API service, not a platform without an API. It provides JSON-based REST API endpoints for developers to validate email addresses in real-time. The service includes SMTP verification, syntax checking, typo detection, and filtering for disposable/free email providers. It uses a freemium model with personal use being free and paid tiers for commercial usage. The service is targeted at developers and businesses needing to improve email data quality and reduce bounce rates. Integration appears straightforward with API key authentication via query parameters. The presence of Stripe integration and professional web presence suggests this is a well-established commercial service."
}
```

**Note:** This appears to be a REST API service rather than a platform without an API. You may want to use the API analysis template instead for more accurate assessment of its endpoints, authentication, and technical capabilities.
Execute

3/3 tests passed

TestEndpointStatusLatency
website_uptimeGET /200345ms
robots_txtGET /robots.txt200111ms
llms_txtGET /llms.txt20071ms
Interpret
{"multi_model": true, "models_used": ["openai", "claude_cli"], "model_scores": {"GPT-4o": {"overall": 81, "dimensions": {"token_efficiency": 8.5, "first_try_success": 7.5, "response_parseability": 9.5, "error_clarity": 7.0, "doc_quality": 7.5, "auth_simplicity": 8.0, "latency": 9.0, "consistency": 8.0}}, "Claude CLI": {"overall": 78, "dimensions": {"token_efficiency": 8.5, "first_try_success": 7.5, "response_parseability": 9.5, "error_clarity": 6.0, "doc_quality": 6.5, "auth_simplicity": 7.0, "latency": 8.0, "consistency": 7.0}}}, "averaged": true}

Agent Readiness

x402 Payments
Not supported
Streaming
No
Sandbox
None
Agent Auth
Unknown
SDKs
None listed
MCP Support
No

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