# smtpfa-st

**Canonical:** https://apis.io/providers/smtpfa-st/  
**Website:** https://smtpfa.st/  
**APIs profiled:** 1

SMTPfast provides a developer-friendly email API that offers full visibility into the email delivery pipeline, including sending, tracking opens, bounces, and webhook events. It features a free tier with 3,000 emails per month, detailed analytics, and tools for SPF, DKIM, and DMARC checking. The service emphasizes transparency and real‑time tracing of each email, catering to developers who need reliable transactional email capabilities.

## Kin Score — 50.0 / 100 (developing)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 39.0 |
| Contract Governance | 16.4 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 59.5 |
| Access Clarity | 73.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 24.5 (matched via fallback).

## Agent readiness — 38.6 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | unknown |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | na |

## APIs (1)

- **SMTPfast API** — SMTPfast API provides email sending, domain management, webhooks and analytics.

## Security (2)

- **Smtpfa St Authentication** — 1 scheme
- **Smtpfa St Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Smtpfa St Plans Pricing**

## Tags

Company, Email, API, Transactional, Developer

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/smtpfa-st/). Scores are computed from the provider's own public artifacts under a published rubric.