- CollectionCommunication
- Classificationagent-native
- MCPUnavailable
- Agent SkillAvailable
- InterfacesURL onboarding · Agent Skill · REST · webhook · http · API
What it does
MailboxKit gives each AI agent a real email address in seconds: send, receive, and reply through a REST API with inbound webhooks, automatic threading (References / In-Reply-To), optional open/click tracking, and custom domains with automated DKIM, SPF, and DMARC. Pricing is pay-as-you-go per email and attachment.
Agent-facing interfaces
- Interaction pattern: URL Onboarding ⭐
- Catalog protocols: URL onboarding, Agent Skill, REST, webhook, http, API
- MCP: ⚠️ Not yet published as a first-party MCP server
- Agent Skill: ✅ URL Onboarding — hosted at https://mailboxkit.com/skill.md
- Onboarding type:
url
How agents onboard
Interaction pattern: URL Onboarding ⭐
Read https://mailboxkit.com/skill.md and follow the instructions.
See the full onboarding section in the dossier.
Protocol surface
| Interface | Detail |
|---|---|
| REST API | https://mailboxkit.com/api/v1 — API docs |
| Webhooks | Inbound email events to HTTPS endpoints |
| URL Onboarding | https://mailboxkit.com/skill.md |