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Mailcannon MCP Server

answering

Mailcannon is answering right now. Last checked moments ago. It exposes 34 tools. Last commit 12 Aug 2026.

AI-powered email outreach platform — send campaigns with deliverability tracking.

Uptime history 48 days of history · worst day 5%
48 days agonow
56.5%
Uptime 24h
52 of 92 checks
34
Tools
read from the server
469 ms
Response time
average over 24h
0
Stars
last commit 12 Aug 2026

What the code does

We read the source, 2 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs an external command src/mcp-client.ts:310
    const proc = spawn(config.command!, config.args ?? [], {
Page executes code built at runtime public/app.html:518
      tbody.innerHTML = contacts.map(function(c) {

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

run in your terminal
claude mcp add mailcannon --transport http https://www.thinkandautomate.dev/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mailcannon": {
      "url": "https://www.thinkandautomate.dev/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mailcannon]
url = "https://www.thinkandautomate.dev/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mailcannon": {
      "url": "https://www.thinkandautomate.dev/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mailcannon": {
      "url": "https://www.thinkandautomate.dev/api/mcp"
    }
  }
}

Available tools 34

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

campaign
add_campaign_step
Add a sequence step (delay in hours, subject, body)
create_campaign
Create a new email campaign
delete_campaign
Delete a campaign and all its steps
delete_campaign_step
Delete a step from a campaign
update_campaign
Update a campaign's name
update_campaign_step
Update a campaign step's day, subject, or body
contact
add_contact
Add a single contact
remove_contact
Remove a contact by ID
update_contact_tags
Set tags on a contact (replaces all tags)
task
create_task
Create a new task
delete_task
Delete a task by ID
update_task
Update a task's status, priority, or fields
contacts
add_contacts
Bulk add contacts (max 100)
list_contacts
List all contacts
provider
add_provider
Add an email provider
remove_provider
Remove a provider by ID
setting
get_setting
Get a user setting (e.g. timezone)
set_setting
Set a user setting (e.g. timezone to 'America/New_York')
campaigns
list_campaigns
List all campaigns with their steps
deliverability
get_deliverability
Get deliverability stats (sent, opens, bounces, replies)
domain
check_domain_deliverability
Check SPF, DKIM, DMARC records for a domain
email
check_email_spam_score
Analyze email subject/body for spam trigger words
pause
pause_campaign
Pause a campaign — stops processing all active schedules for this campaign
process
process_campaigns
Process all due campaign schedules (includeFailed: true to retry failed ones)
providers
list_providers
List all email providers
resume
resume_campaign
Resume a paused campaign — reactivates all paused schedules
retry
retry_failed
Reset all failed schedules to active for retry
schedule
schedule_campaign
Assign contacts to a campaign and schedule it
schedules
list_schedules
List all scheduled campaign runs
send
send_test_email
Send a test email to yourself to preview formatting
settings
list_settings
List all user settings
step
check_step_spam_score
Check a campaign step's subject and body for spam triggers
tags
list_tags
List all unique tags across your contacts
tasks
list_tasks
List all tasks

Endpoints

URLTransportStateLatencyChecked
https://www.thinkandautomate.dev/api/mcp streamable-http answering 258 ms 0 min ago

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Mailcannon — questions

Answers built from our own checks of this server.

What can Mailcannon do?
It exposes 34 tools, read directly from the server on our last check. Among them: add_campaign_step, add_contact, add_contacts, add_provider, check_domain_deliverability, check_email_spam_score and 28 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Mailcannon mostly used for?
Its tools cluster around campaign, contact and task. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Mailcannon working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 52 of 92 checks got a reply (56.5%), average response time 469 ms. The bar chart above shows every period we have measured.
How do I connect Mailcannon?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Mailcannon need an API key?
No. Mailcannon completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 34 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Mailcannon?
It answers our handshake in 469 ms on average, which is faster than 31% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Mailcannon open source?
We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.