MailerSend MCP server

What the model can do

MailerSend transactional email: the account's plan, quota and limits, sending domains and their DNS status, the sending log for a domain over a date window (sender, recipient, subject, status, opens and clicks, why an email was rejected) filtered by recipient, a single email's delivery events, templates and scheduled messages. Can send an email, cancel a scheduled one, create, edit or delete a template and add addresses to a suppression list, each only when asked.

Reads

• mailersend_accountThe MailerSend account: name, plan, approval status, how many days of activity it keeps, emails sent this cycle against the limit…
• mailersend_domainsMailerSend sending domains: id (needed by the log reads), name, whether verified, DKIM and SPF status, whether sending is paused…
• mailersend_emailsThe MailerSend sending log for one domain over a date window, newest first: each email's id, sender, recipient, subject, status (queued, sent…
• mailersend_emailOne sent MailerSend email by id, with its delivery events newest first (sent, delivered, opened, clicked, bounced…
• mailersend_templatesMailerSend email templates: id, name, type, category and when created and changed.
• mailersend_scheduledMailerSend scheduled messages: message id, subject, when it is due to send, and its status (scheduled, sent, error).

Acts, when you ask

These change something in MailerSend. The model is told to use them only when you ask for exactly that, and each one is granted by name: per team on a shared connection, by the owner on a personal one.

• mailersend_send_emailSend an email through MailerSend from a verified domain, now or at a time up to 72 hours ahead.
• mailersend_cancel_scheduledCancel a scheduled MailerSend email so it is never sent.
• mailersend_create_templateCreate a MailerSend email template from HTML and plain text.
• mailersend_update_templateChange a MailerSend template's name, HTML, plain text or tags.
• mailersend_delete_templateDelete a MailerSend template.
• mailersend_suppress_recipientsAdd up to 50 email addresses to a MailerSend suppression list (blocklist, hard bounces, spam complaints or unsubscribes)…

Connect it

First connect MailerSend on Dashboard → Connections, then add Memtro to your client once. The MailerSend tools appear alongside the tools of everything else you have connected; nothing is configured per connector.

claude plugin marketplace add memtro-org/claude-memtro
claude plugin install memtro@memtro --config api_key=sk-memtro-...

{
  "mcpServers": {
    "memtro": {
      "url": "https://platform.memtro.com/api/mcp",
      "headers": {
        "Authorization": "Bearer sk-memtro-..."
      }
    }
  }
}

{
  "mcp": {
    "memtro": {
      "type": "remote",
      "url": "https://platform.memtro.com/api/mcp",
      "headers": {
        "Authorization": "Bearer sk-memtro-..."
      }
    }
  }
}

Who may use it

The key identifies the person, and the server offers that person the tools they may use everywhere else in Memtro. A shared MailerSend connection is used by the teams an administrator granted it to, tool by tool, on the Permissions page; a personal connection is used by its owner alone, and its tools that act stay off until the owner allows them. See Teams and permissions and Connectors.

Ask it like this

• › Did the password reset email to priya@acme.example arrive?
• › Why were emails rejected on our domain yesterday?
• › How many emails have we sent this cycle against our limit?
• › Is our sending domain's DKIM verified?
• › Add bounced@bigco.example to the blocklist

Questions

Is this an official MailerSend MCP server?

No. It is Memtro's MCP server with Memtro's MailerSend connector behind it: the connector reads MailerSend through its API with the credentials you connect on Dashboard → Connections, and MailerSend publishes nothing here. The same endpoint carries every other system you connect and Memtro's memory tools.

What does it cost?

Nothing on top of Memtro. One price per organisation by its number of users, from $50 a month for up to 10 users after a 7-day free trial, with every connector, the MCP server, jobs and memory included. You bring your own model keys.

Can it change anything in MailerSend?

Only when you ask, and only what it has been granted: send an email (billed against the plan, reaches real people); cancel a scheduled email; create an email template; edit an email template; delete an email template; add addresses to a suppression list (they stop receiving mail). Every other tool reads, searches or lists. An administrator grants each acting tool by name per team, and a personal connection acts only after its owner allows it.

Which clients work?

Any MCP client that speaks Streamable HTTP: Claude Code, Cursor, Claude Desktop, OpenCode, Codex, Zed, Windsurf, Cline and the Anthropic and OpenAI SDKs. There is no local process to run; the server is remote and authenticated with your key.

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