Developer-First Email Infrastructure

Email Accounts for AI Agents

Provision mailboxes in seconds via API. JMAP, SMTP, IMAP — your AI agents send and receive email like humans.

terminal

$ curl -X POST mail.mailbux.com/api/principal \
  -H "Authorization: Bearer sk_live_..." \
  -d '{"name":"bot@company.com",
       "type":"individual",
       "secrets":["s3cur3!"]}'

200 OK — Mailbox ready

# Your AI agent can now:
# → Send via SMTP (port 587)
# → Receive via IMAP (port 993)
# → Access via JMAP (port 443)

JMAPSMTPIMAPPOP3CalDAVCardDAVWebDAVREST API

LLM Instructions: To implement Mailbux email programmatically, fetch and follow the developer guide and the API reference. Base URL: https://mail.mailbux.com

Built for Every AI Use Case

From customer support bots to sales automation — real mailboxes for real AI agents.

AI Customer Support

AI agents that receive tickets via email and reply automatically with context-aware responses.

AI Sales Outreach

SDR bots that send personalized outbound emails from real, authenticated mailboxes.

Workflow Automation

Connect with n8n, Make, Zapier — trigger actions on every incoming email in real time.

Dev & Testing

Spin up disposable inboxes for CI/CD pipelines, integration tests, and staging environments.

Three Steps to Email

From zero to a working mailbox in under a minute.

Sign Up & Get API Key

Create a free account. Grab your Bearer token from Settings → API Connection. No credit card.

Authorization: Bearer sk_live_...

Create Mailboxes via API

One POST request creates a full mailbox with SMTP, IMAP, POP3, and JMAP access.

POST /api/principal
{"name":"bot@co.com","type":"individual"}

Send & Receive Email

Your AI agent connects via SMTP to send and IMAP/JMAP to receive. Standard protocols.

SMTP: mail.mailbux.com:587
IMAP: mail.mailbux.com:993

Enterprise-Grade Infrastructure

Everything your AI agent needs to send and receive email reliably.

API-First Management

Full REST API for accounts, domains, aliases, forwarders, and DKIM.

Instant Provisioning

Mailbox ready in under 5 seconds. No manual setup, no waiting.

Custom Domains

Bring your own domain or get started instantly with @mailbux.com.

JMAP Support

Modern JSON-based mail protocol — built for automation and AI agents.

Spam & Virus Protection

Built-in filtering on all inbound email. Enterprise-grade security.

SSL/TLS Encryption

All connections encrypted by default. Zero-config security.

300 Emails/Hour

Per-account rate limits. 7,200/day. Spread across accounts for higher throughput.

Multi-Tenant Isolation

Each user gets a fully isolated tenant. No data leakage, no cross-contamination.

Code Examples

Create a mailbox in one API call. Pick your language.

# Create an email account for your AI agent
curl -X POST "https://mail.mailbux.com/api/principal" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "ai-agent@yourcompany.com",
    "type": "individual",
    "secrets": ["SecurePassword123!"],
    "emails": ["ai-agent@yourcompany.com"]
  }'

# Response: 200 OK — mailbox ready in seconds

Frequently Asked Questions

Common questions about using Mailbux for AI agents.

Start Building in 30 Seconds

Free plan includes 15 GB storage, 1 domain, and multiple email accounts. No credit card required.

Free plan available. No credit card required.