API Tools

email59.com

An email API MCP server for sending transactional or marketing emails and managing account credits, limits, and branding.

1 endpoint20 known toolsFirst detected October 20, 2026Last detected October 20, 2026

ENDPOINT 1

https://email59.com/v1/mcp

No auth detected

MCP server metadata

Name: email59
Version: 0.5.0

Capabilities

tools

Server instructions

email59 routes transactional and marketing email for developers and bots. 200 emails a day free, renewed daily; every $1 buys 3,636 email credits that last until used. To sign up or sign in, call auth with your email, then call auth again with the email and the 6-digit otp from the email. Send the returned session_key as 'Authorization: Bearer <session_key>' on every later request (an e59_live_ API key works too). Mail is sent from your name @email59.com; there is no domain to set up.

Known tools 20

auth

Inferred read-only

get_pricing

Free daily emails (renewed every day), email credits per dollar, and the packs on sale.

Potential side effects

get_account

The signed-in account: email, daily_limit, sent_today, remaining_today, credits_remaining, resets_at.

Potential side effects

update_account

Set the name, company or brand (the look of every email the account sends) on the account.

Potential side effects

send_email

Send one email to one recipient: transactional (receipt, code, alert) or marketing (category).

Potential side effects

send_campaign

Send a marketing email to up to 1,000 recipients; the unsubscribe link is added for you.

Potential side effects

check_email

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.

Potential side effects

check_list

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).

Potential side effects

validate_email

Check an address before sending.

Inferred read-only

block

Block an email address or a whole domain for this account.

Potential side effects

unblock

Remove an email address or domain from the blocklist.

Potential side effects

list_blocklist

The account's blocked addresses and domains.

Inferred read-only

add_unsubscribe

Record an opt-out.

Inferred read-only

buy_pack

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).

Potential side effects

order_status

Status of an order from buy_pack: pending or paid.

Inferred read-only

create_api_key

Create a long-lived API key (max 10 per account).

Potential side effects

list_test_messages

Emails sent with a test key (e59_test_...), newest first: accepted, stored, never delivered.

Inferred read-only

list_api_keys

The account's API keys (ids and labels, never the keys themselves).

Inferred read-only

verify_start

Email a one-time verification code to an address (sign-up, sign-in, confirming an email).

Potential side effects

verify_check

Check a code from verify_start.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

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

Claude Code

.mcp.json

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

Claude Desktop

Settings → Connectors → Add custom connector

Name: email59
Remote MCP URL: https://email59.com/v1/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

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

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

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

Generic MCP

Client-specific MCP configuration

{
  "name": "email59",
  "transport": "streamable-http",
  "url": "https://email59.com/v1/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.