# Missive

**Canonical:** https://apis.io/providers/missive/  
**Website:** https://missiveapp.com  
**APIs profiled:** 7

Missive is a team inbox and collaboration platform that brings email, SMS, WhatsApp, Instagram, Facebook Messenger, and live chat into one unified workspace. It provides a REST API for managing conversations, messages, contacts, labels, drafts, analytics, and automation rules, enabling teams to integrate Missive into business workflows. The API supports webhooks for real-time event notifications, custom channels for integrating external communication sources, and UI/iFrame integrations via JavaScript. Developers can automate drafts, sync contacts, generate analytics reports, and build custom integrations with the platform.

## Kin Score — 44.3 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 44.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 62.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 57.9 |
| Access Clarity | 57.9 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid (free trial) · Open access — onboarding: open, pricing: paid, trial: yes (confidence: high).

## APIs (7)

- **Missive Analytics API** — Create and retrieve analytics reports
- **Missive Contact Books API** — List available contact books
- **Missive Contact Groups API** — List contact groups and organizations
- **Missive Contacts API** — Manage contacts and contact data
- **Missive Conversations API** — Manage conversations in the inbox
- **Missive Drafts API** — Create and delete draft messages
- **Missive Messages API** — Create messages in custom channels

## Agentic access (1)

- **Missive Agentic Access** — 19 operations · 8 acting

## Security (4)

- **Missive Authentication** — http · 1 scheme
- **Missive Domain Security** — TLSv1.3 · HSTS · DMARC
- **Missive Vulnerability Disclosure** — security.txt · contact published
- **Missive Trust Center** — SOC 2, GDPR

## Plans (1)

- **Missive Plans Pricing**

## Tags

Team Inbox, Collaboration, Email, Messaging, Conversations, Contacts, Webhook, Automation, REST API

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