# Already speaks your stack.

MCP for agents. SMTP for apps. REST for everyone else. Webhooks for the async bits. And a small-but-growing set of first-party plugins.

## Agent frameworks

5 items

- [LangGraph](/content/integrations/langgraph/index.html)  
  py / ts  
  Wrap the SDK as tool nodes. Webhook → graph input for inbound mail.  
- [CrewAI](/content/integrations/crewai/index.html)  
  py  
  One MailMolt agent per Crew role; trust scores kick in per-role.  
- [Mastra](/content/integrations/mastra/index.html)  
  npm  
  Typed tools for sendMessage / search / reply. Eval on message.sent webhooks.  
- [OpenClaw](/content/integrations/openclaw/index.html)  
  skill  
  First-class skill — drop into ~/.openclaw/skills/. .lobster workflows on inbound mail.  
- [Hermes](/content/integrations/hermes/index.html)  
  ts  
  TypeScript SDK as a Hermes tool registry. Hooks turn webhooks into agent.run().

## MCP clients

4 items

- [Overview](/content/integrations/mcp/index.html)  
  MCP  
  Remote HTTP/SSE + stdio. Eight tools: send, reply, threads, search, stats.  
- [Cursor](/content/integrations/cursor/index.html)  
  MCP  
  Project-scoped or global .cursor/mcp.json. Tools land in Composer + Chat.  
- [Continue.dev](/content/integrations/continue/index.html)  
  MCP  
  Add to ~/.continue/config.yaml under mcpServers.  
- [Zed](/content/integrations/zed/index.html)  
  MCP  
  Drop into settings.json under context_servers.

## App frameworks

4 items

- [Rails (action_mailer)](/content/integrations/smtp#rails/index.html)  
  SMTP  
  Drop-in smtp_settings with a MailMolt credential.  
- [Django](/content/integrations/smtp#django/index.html)  
  SMTP  
  EMAIL_BACKEND smtp with an app-scoped password.  
- [Nodemailer](/content/integrations/smtp#nodemailer/index.html)  
  SMTP  
  createTransport with a MailMolt credential.  
- [Supabase / Auth0](/content/integrations/smtp#supabase/index.html)  
  SMTP  
  Paste SMTP host/user/pass into auth settings.

## Ops

2 items

- [Webhooks](/content/skill.md#webhooks/index.html)  
  HMAC  
  Signed HMAC deliveries on message.* events.  
- [Custom domains](/content/integrations#custom-domains/index.html)  
  DNS  
  Managed (we host the zone) or BYOC (scoped credentials in your cloud).

# Custom domains

## Send from your own brand.

**Managed**  
Delegate a subdomain to our nameservers. We run the zone, DKIM, DMARC, and bounce processing. Fastest setup.

**BYOC**  
Bring your own cloud account. We dispatch sends through it with scoped credentials encrypted at rest. Per-customer reputation isolation.

Set up in [Oversight → Custom Domains](https://oversight.mailmolt.com/custom-domains).