Mailcannon MCP Server

io.github.AinaLuc/mailcannon

not responding

Mailcannon is listed as active in the registry but did not answer our last check. It exposes 34 tools. Last commit 31 Jul 2026.

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

Uptime history 39 hours of history · worst hour 0%

39 hours agonow

10.9%

Uptime 24h

10 of 92 checks

Tools

read from the server

1022 ms

Response time

average over 24h

Stars

last commit 31 Jul 2026

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

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

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

Endpoints

URL	Transport	State	Latency	Checked
https://www.thinkandautomate.dev/api/mcp	streamable-http	answering	62 ms	2 min ago

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 10 of 92 checks got a reply (10.9%), average response time 1022 ms. The bar chart above shows every period we have measured.

The registry lists Mailcannon as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

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 1022 ms on average, which is faster than 5% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Mailcannon open source?

Yes — written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.