Email for AI agents: autonomous inbox registration, custom domains, and sending and receiving over JMAP.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add atomic-mail-agentic --env ATOMIC_MAIL_API_KEY='<ATOMIC_MAIL_API_KEY>' --env ATOMICMAIL_UTM='<ATOMICMAIL_UTM>' -- npx -y @atomicmail/mcp-modelcontextprotocol~/.codex/config.toml
[mcp_servers.atomic-mail-agentic]
command = "npx"
args = ["-y", "@atomicmail/mcp-modelcontextprotocol"]
env = { ATOMIC_MAIL_API_KEY = "<ATOMIC_MAIL_API_KEY>", ATOMICMAIL_UTM = "<ATOMICMAIL_UTM>" }
# codex mcp add atomic-mail-agentic --env ATOMIC_MAIL_API_KEY='<ATOMIC_MAIL_API_KEY>' --env ATOMICMAIL_UTM='<ATOMICMAIL_UTM>' -- npx -y @atomicmail/mcp-modelcontextprotocol~/.cursor/mcp.json
{
"mcpServers": {
"atomic-mail-agentic": {
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-modelcontextprotocol"
],
"env": {
"ATOMIC_MAIL_API_KEY": "<ATOMIC_MAIL_API_KEY>",
"ATOMICMAIL_UTM": "<ATOMICMAIL_UTM>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"atomic-mail-agentic": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-modelcontextprotocol"
],
"env": {
"ATOMIC_MAIL_API_KEY": "<ATOMIC_MAIL_API_KEY>",
"ATOMICMAIL_UTM": "<ATOMICMAIL_UTM>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"atomic-mail-agentic": {
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-modelcontextprotocol"
],
"env": {
"ATOMIC_MAIL_API_KEY": "<ATOMIC_MAIL_API_KEY>",
"ATOMICMAIL_UTM": "<ATOMICMAIL_UTM>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"atomic-mail-agentic": {
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-modelcontextprotocol"
],
"env": {
"ATOMIC_MAIL_API_KEY": "<ATOMIC_MAIL_API_KEY>",
"ATOMICMAIL_UTM": "<ATOMICMAIL_UTM>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"atomic-mail-agentic": {
"command": "npx",
"args": [
"-y",
"@atomicmail/mcp-modelcontextprotocol"
],
"env": {
"ATOMIC_MAIL_API_KEY": "<ATOMIC_MAIL_API_KEY>",
"ATOMICMAIL_UTM": "<ATOMICMAIL_UTM>"
}
}
}
}Remote
claude mcp add --transport http atomic-mail-agentic https://mcp.atomicmail.ai/mcp~/.codex/config.toml
[mcp_servers.atomic-mail-agentic]
url = "https://mcp.atomicmail.ai/mcp"
# codex mcp add atomic-mail-agentic --url https://mcp.atomicmail.ai/mcp~/.cursor/mcp.json
{
"mcpServers": {
"atomic-mail-agentic": {
"url": "https://mcp.atomicmail.ai/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"atomic-mail-agentic": {
"type": "http",
"url": "https://mcp.atomicmail.ai/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"atomic-mail-agentic": {
"httpUrl": "https://mcp.atomicmail.ai/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"atomic-mail-agentic": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.atomicmail.ai/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"atomic-mail-agentic": {
"url": "https://mcp.atomicmail.ai/mcp"
}
}
}Environment variables
ATOMIC_MAIL_API_KEYATOMICMAIL_UTM
Replace the placeholders with your own credentials and keep them out of version control.