Inbrix
Solutions & Architecture

One email workspace for every domain, product, and AI agent you build.

Whether you are a founder running 5 SaaS products, an agency managing 50 client brands, or an engineering team giving AI agents real email addresses via MCP, Inbrix replaces fragmented email tools with a single unified platform.

01 // Multi-Domain Founders 02 // AI Agents & MCP 03 // Cloudflare 1-Click Email 04 // Agencies & Studios 05 // Calendar
01 // Multi-Domain Founders & Indie Hackers

Manage all your product domains in one unified inbox.

Every time you buy a new domain for a SaaS product, micro-tool, or newsletter, setting up support@, hello@, and billing@ on traditional providers means another monthly bill and another login tab.

  • 01 Unified or Scoped Views: Read customer emails from all connected domains in one stream, or filter down to a single domain in one click.
  • 02 Unlimited Free Aliases: Provision support@, founders@, security@, and billing@ on every domain at $0 extra cost.
  • 03 Automatic Reply-From Matching: When you reply to a customer thread, Inbrix automatically replies from the exact domain and alias the customer emailed.
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Workspace Domain Switcher 3 Domains Active
craftkit.dev DKIM + SPF Verified
support@craftkit.dev billing@craftkit.dev hello@craftkit.dev
zenithlabs.io DKIM + SPF Verified
founders@zenithlabs.io press@zenithlabs.io
promptflow.ai DKIM + SPF Verified
agent@promptflow.ai security@promptflow.ai
claude_desktop_config.json / MCP 26 Native Tools
{
  "mcpServers": {
    "inbrix": {
      "url": "https://app.inbrix.us/mcp",
      "headers": {
        "Authorization": "Bearer inbrix_live_..."
      }
    }
  }
}
list_threads · Triage inbox
reply_to_thread · Auto-reply
search_messages · RAG query
list_calendar_events · Calendar
02 // AI Agent Email & MCP Infrastructure

Give your AI agents a real custom-domain email inbox.

Connecting an AI agent to Gmail or Outlook requires tedious cloud OAuth consent screens, pub/sub queues, and brittle MIME parsers. Inbrix is built from the ground up as programmable email infrastructure for Claude, ChatGPT, Cursor, LangChain, and custom agents.

  • 01 Hosted MCP Server (26 Tools): Point Claude Desktop, Cursor, or any MCP client to https://app.inbrix.us/mcp with a scoped API key or OAuth 2.0 PKCE.
  • 02 OpenAI Function Schema Export: Fetch ready-to-use tool definitions at /mcp?format=openai for OpenAI, LangChain, and CrewAI agents.
  • 03 HMAC-SHA256 Inbound Webhooks: Trigger your agent runtime the millisecond an email arrives at agent@yourdomain.com.
Read Developer & MCP Docs View Raw /docs.md Spec
03 // Cloudflare & Universal Registrar Compatibility

Send and receive from your Cloudflare domain in under 60 seconds.

Cloudflare Email Routing is great for forwarding, but it does not give you an inbox to read threads or an outbound mail server to send from your custom domain. Inbrix completes the stack with 1-click Cloudflare DNS provisioning and full outbound DKIM/SPF delivery.

Cloudflare DNS < 60 sec

1-Click automated MX, SPF, 2048-bit DKIM, and DMARC provisioning with zero manual copy-pasting.

Namecheap & Porkbun ~2 min

Registrar-specific copy-paste rows with automatic host normalization and live background DNS polling.

AWS Route 53 & Vercel ~2 min

Zero-interruption coexistence alongside your existing A, AAAA, CNAME, and CAA web application records.

GoDaddy & Squarespace ~2 min

Step-by-step guided verification with instant inbound test-ping confirmation before launch.

04 // Agencies, Studios & Holding Companies

Up to 100 custom domains & 100 mailboxes under one Scale workspace.

Digital agencies, venture studios, and portfolio operators use Inbrix Scale ($39/mo billed yearly) to centralize client support inboxes, brand launches, and team role addresses without managing dozens of separate billing accounts.

  • 100 Custom Domains & 100 Dedicated Mailboxes included
  • 250 GB Encrypted R2 Drive for client deliverables and attachments
  • Role-Based Team Invitations and full audit logging
Explore Scale Workspace
05 // Calendar

A shared calendar next to the inbox.

Keep meetings on the same workspace as the mailboxes. The calendar is included on every plan.

  • Workspace calendar for the team
  • Agent access through the same MCP connection as mail
  • Mail clients for Apple Mail and Gmail on the custom domain
Open a Workspace
Solutions FAQ

Frequently asked questions

Inbrix lets you connect between 2 and 100 custom domains inside a single workspace. Every incoming message across all your domains appears in one unified inbox stream with clear domain badges, or you can switch to a single domain perspective in one click.

Launch your custom-domain email workspace in under 2 minutes.

7-day free trial on every plan. $0 due today, unlimited free aliases, cancel anytime in 1 click.

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