Hermes-agent agentmail

Give the agent its own dedicated email inbox via AgentMail. Send, receive, and manage email autonomously using agent-owned email addresses (e.g. hermes-agent@agentmail.to).

install

source · Clone the upstream repo

git clone https://github.com/NousResearch/hermes-agent

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/NousResearch/hermes-agent "$T" && mkdir -p ~/.claude/skills && cp -r "$T/optional-skills/email/agentmail" ~/.claude/skills/nousresearch-hermes-agent-agentmail-0fa8c5 && rm -rf "$T"

manifest: optional-skills/email/agentmail/SKILL.md

AgentMail — Agent-Owned Email Inboxes

Requirements

AgentMail API key (required) — sign up at https://console.agentmail.to (free tier: 3 inboxes, 3,000 emails/month; paid plans from $20/mo)
Node.js 18+ (for the MCP server)

When to Use

Use this skill when you need to:

Give the agent its own dedicated email address
Send emails autonomously on behalf of the agent
Receive and read incoming emails
Manage email threads and conversations
Sign up for services or authenticate via email
Communicate with other agents or humans via email

This is NOT for reading the user's personal email (use himalaya or Gmail for that). AgentMail gives the agent its own identity and inbox.

Setup

1. Get an API Key

Go to https://console.agentmail.to
Create an account and generate an API key (starts with
```
am_
```
)

2. Configure MCP Server

Add to

~/.hermes/config.yaml

(paste your actual key — MCP env vars are not expanded from .env):

mcp_servers:
  agentmail:
    command: "npx"
    args: ["-y", "agentmail-mcp"]
    env:
      AGENTMAIL_API_KEY: "am_your_key_here"

3. Restart Hermes

hermes

All 11 AgentMail tools are now available automatically.

Available Tools (via MCP)

Tool	Description
`list_inboxes`	List all agent inboxes
`get_inbox`	Get details of a specific inbox
`create_inbox`	Create a new inbox (gets a real email address)
`delete_inbox`	Delete an inbox
`list_threads`	List email threads in an inbox
`get_thread`	Get a specific email thread
`send_message`	Send a new email
`reply_to_message`	Reply to an existing email
`forward_message`	Forward an email
`update_message`	Update message labels/status
`get_attachment`	Download an email attachment

Procedure

Create an inbox and send an email

Create a dedicated inbox:
- Use
```
create_inbox
```
  with a username (e.g.
```
hermes-agent
```
  )
- The agent gets address:
```
hermes-agent@agentmail.to
```
Send an email:
- Use
```
send_message
```
  with
```
inbox_id
```
  ,
```
to
```
  ,
```
subject
```
  ,
```
text
```
Check for replies:
- Use
```
list_threads
```
  to see incoming conversations
- Use
```
get_thread
```
  to read a specific thread

Check incoming email

Use
```
list_inboxes
```
to find your inbox ID
Use
```
list_threads
```
with the inbox ID to see conversations
Use
```
get_thread
```
to read a thread and its messages

Reply to an email

Get the thread with
```
get_thread
```
Use
```
reply_to_message
```
with the message ID and your reply text

Example Workflows

Sign up for a service:

1. create_inbox (username: "signup-bot")
2. Use the inbox address to register on the service
3. list_threads to check for verification email
4. get_thread to read the verification code

Agent-to-human outreach:

1. create_inbox (username: "hermes-outreach")
2. send_message (to: user@example.com, subject: "Hello", text: "...")
3. list_threads to check for replies

Pitfalls

Free tier limited to 3 inboxes and 3,000 emails/month
Emails come from
```
@agentmail.to
```
domain on free tier (custom domains on paid plans)
Node.js (18+) is required for the MCP server (
```
npx -y agentmail-mcp
```
)
The
```
mcp
```
Python package must be installed:
```
pip install mcp
```
Real-time inbound email (webhooks) requires a public server — use
```
list_threads
```
polling via cronjob instead for personal use

Verification

After setup, test with:

hermes --toolsets mcp -q "Create an AgentMail inbox called test-agent and tell me its email address"

You should see the new inbox address returned.

References

AgentMail docs: https://docs.agentmail.to/
AgentMail console: https://console.agentmail.to
AgentMail MCP repo: https://github.com/agentmail-to/agentmail-mcp
Pricing: https://www.agentmail.to/pricing