MCP server

email59 Official

com.email59/email59

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Send transactional email from AI agents: sign up by email code, no domain or DNS setup.

Website

At a glance

Type

MCP server

Publisher

email59.com (verified by the MCP Registry)

Status

Working at last check

Tools

20

Token cost

About 2,941 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http email59 https://email59.com/v1/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.email59]
url = "https://email59.com/v1/mcp"

Gemini CLI

{"mcpServers":{"email59":{"httpUrl":"https://email59.com/v1/mcp"}}}

Cursor

{"mcpServers":{"email59":{"url":"https://email59.com/v1/mcp"}}}

VS Code

{"servers":{"email59":{"type":"http","url":"https://email59.com/v1/mcp"}}}

Antigravity

agy mcp add email59 https://email59.com/v1/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"email59","server_url":"https://email59.com/v1/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"email59","server_url":"https://email59.com/v1/mcp"}

Tools

• add_unsubscribe ~94 tokens
  Record an opt-out. Campaigns to that list (or every list, if list_id is empty) skip the address.
• auth ~173 tokens
  Sign up or sign in to email59. Pass email to have a 6-digit code emailed, then call again with email and otp to get a session key (a new email is signed up with 200 free emails a day). Or pass api_key to swap an API key for a session key. Send the key as the HTTP header 'Authorization: Bearer <sessi
• block ~96 tokens
  Block an email address or a whole domain for this account. Sends to it are refused.
• buy_pack Moves money · ~226 tokens
  Start buying a pack (pack_5 = $5, pack_10 = $10, pack_50 = $50; each $1 adds 3,636 email credits, which don't renew and last until used, plus a purchase fee of 5% or at least $0.50 at checkout; GET /v1/pricing has the totals). Returns a checkout_url for a person to pay; the credits arrive once the p
• check_email ~159 tokens
  Free deep check of an email address, no sign-in needed: format, provider username rules, disposable and role addresses, and the domain's MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT and BIMI records. Returns a report with a score (0-99, likelihood the address is real) and a verdict (likely_valid, risky, l
• check_list ~181 tokens
  List check for a mailing list: up to 1,000 different addresses a call, as emails or the text of a CSV (the column headed email). One status each: valid, risky, role, disposable, no_mx or invalid, with a reason, plus counts per status. Format, provider rules and one MX lookup per domain; no email is
• create_api_key Changes accounts · ~113 tokens
  Create a long-lived API key (max 10 per account). It is shown only once. mode 'test' makes an e59_test_ key for staging and CI: its sends are accepted and stored, never delivered, and use no allowance.
• get_account ~54 tokens
  The signed-in account: email, daily_limit, sent_today, remaining_today, credits_remaining, resets_at.
• get_pricing ~56 tokens
  Free daily emails (renewed every day), email credits per dollar, and the packs on sale. No sign-in needed.
• list_api_keys ~45 tokens
  The account's API keys (ids and labels, never the keys themselves).
• list_blocklist ~39 tokens
  The account's blocked addresses and domains.
• list_test_messages ~149 tokens
  Emails sent with a test key (e59_test_...), newest first: accepted, stored, never delivered. Pass id for one email with its html and text (a verify_start code is in there), or to to filter by recipient.
• order_status ~55 tokens
  Status of an order from buy_pack: pending or paid.
• send_campaign Sends messages · ~232 tokens
  Send a marketing email to up to 1,000 recipients; the unsubscribe link is added for you. Invalid, role, blocked or unsubscribed recipients are skipped and cost nothing; each accepted recipient uses 1 email of today's allowance. A campaign that doesn't fit what's left today is refused whole.
• send_email Sends messages · ~539 tokens
  Send one email to one recipient: transactional (receipt, code, alert) or marketing (category). It goes out as HTML in a branded template with a text part; give text, html or both. Uses 1 email of today's allowance. Many recipients at once: send_campaign.
• unblock ~69 tokens
  Remove an email address or domain from the blocklist.
• update_account ~153 tokens
  Set the name, company or brand (the look of every email the account sends) on the account.
• validate_email ~71 tokens
  Check an address before sending. Verdicts: ok, invalid, no_mx, disposable, role.
• verify_check ~174 tokens
  Check a code from verify_start. Give to (checks the newest code sent there) or id, and code. Returns valid true or false and a status: approved, wrong_code, expired, too_many_attempts (5 wrong codes lock it), already_used, replaced or not_found. A right code works once. Uses no allowance.
• verify_start ~263 tokens
  Email a one-time verification code to an address (sign-up, sign-in, confirming an email). email59 makes the code, sends it, limits resends and expires it; the code is never returned to you. Returns an id. Uses 1 email of today's allowance. A new code to the same address replaces the one waiting ther

Browse

• Domains and DNS
• Spreadsheets
• Email
• Payments

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