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MCP live MCP 2025-06-18 streamable-http

Mailcheer

com.mailcheer/mailcheer

Manage a Mailcheer email workspace: subscribers, segments, campaigns, transactional sends and stats.

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
1011ms
last probe
Tools
19
callable
Resources
1
readable
Prompts
0
available
Primary URL
https://mailcheer.com/api/mcp
Score: 100/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
19 tools, 1 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
20 items in total; 3 or more earns these points.
pass Describes itself 10/10
100 characters; more than 30 earns these points.

Tools · 19

send_email

Sends a single (transactional) email to one or more addresses. The sender must belong to a verified domain of the workspace — call get_account to see which ones. An address suppressed for a bounce, a …

get_account

Returns the workspace this key grants access to, its scopes, plan, remaining emails this month (queued sends included), when the counter resets, billing status, member and domain limits, sending domai…

list_subscribers

Lists the workspace's subscribers, page by page. Use `cursor` with the `next_cursor` value from the response to get the next page. `status` filters on subscribed, pending, unsubscribed, bounced, or co…

add_subscriber

Adds or updates a subscriber. By default the person enters as PENDING and receives a confirmation email: that is double opt-in, and it protects the workspace's sending reputation. `double_opt_in: fals…

remove_subscriber

Unsubscribes an address and adds it to the workspace's suppression list: no more campaigns, automations, or sends carrying `unsubscribe_url`. The record is not deleted — that is what prevents the addr…

update_subscriber

Updates the first name (`first_name`), last name (`last_name`) and custom fields (`fields`, by technical key) of an existing subscriber. The email address cannot be changed: it is the identifier. Tags…

list_tags

The workspace's tags, with how many subscribers carry each one (`subscribers`) and, among them, the active ones (`subscribed`). Read this before tagging: reuse an existing name rather than creating a …

tag_subscriber

Adds (`add`) and removes (`remove`) tags on ONE existing subscriber, and nothing else: no subscription, no confirmation email, no status touched. Prefer it to add_subscriber for changing tags: add_sub…

erase_subscriber

Erases a person from the workspace at THEIR request (right to erasure): record, name, fields, proof of consent, tags. Statistics of campaigns already sent do not move; the suppression list is not touc…

list_suppression

Suppressed addresses, with their reason: bounced, complained or manually suppressed (nothing goes to them), or unsubscribed (no more campaigns, automations, or sends carrying `unsubscribe_url`, but an…

add_suppression

Adds an address to the workspace's suppression list. By default (`manual`), it will receive nothing further, neither campaigns nor individual emails; with `unsubscribe`, only campaigns, automations, a…

list_campaigns

The workspace's campaigns, from newest to oldest, with their status: draft, scheduled, sending, or sent.

create_campaign

Creates a DRAFT. Nothing is sent: you then need to call send_campaign, or send it from the Mailcheer workspace. Content is written in plain text in `text` — a blank line separates paragraphs, "#" at t…

update_campaign

Edits a DRAFT: name, subject, preheader, kind, sender, content (`text`). Nothing is sent. Prefer it to create_campaign to rework a text: otherwise the old draft stays in the list. A scheduled, sending…

preview_campaign_send

Read-only: nothing is sent. Returns exactly what send_campaign would do right now — would it go out (and if not, why), and how many people would receive it. With `to`, reports address by address who i…

send_campaign

⚠️ IRREVERSIBLE. Locks the recipient list and triggers sending to ALL active subscribers in the workspace — or, with `to`, only to the requested addresses that are active subscribers (never an unsubsc…

get_campaign_stats

Status and figures for a campaign: recipients, sent, delivered, opened, clicked, bounced, complained. Rates are calculated on delivered messages, not on recipients. Every rate comes twice: open_rate a…

get_email

Status of an email sent via send_email: sent, delivered, bounced, or complained. Amazon's delivery callback arrives a few seconds to a few minutes after sending — a "sent" status right after the call …

verify_email

Verifies one or more addresses (up to 100) BEFORE writing to them, without sending anything: syntax, a domain that receives mail, a mailbox that already hard-bounced on Mailcheer, disposable or role m…

Resources · 1

Mailcheer API reference

Endpoints, scopes, error codes, sending rules and pagination.

mailcheer://docs

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://mailcheer.com/api/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "mailcheer": {
      "url": "https://mailcheer.com/api/mcp",
      "transport": "streamable-http"
    }
  }
}