email59

com.email59/email59Version 0.5.0

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

Status

Responds781 msNov 14, 2026, 13:55 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:55 UTC
Latency: 781 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://email59.com/v1/mcpResponds781 msNov 14, 2026, 13:55 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: email59
Remote MCP server URL: https://email59.com/v1/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"email59","type":"http","url":"https://email59.com/v1/mcp"}'

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Tools

20 tools

Tools of email59
	Description		Read-only	Idempotent	Open world
`add_unsubscribe`Record an opt-out. Campaigns to that list (or every list, if list_id is empty) skip the address.	Record an opt-out. Campaigns to that list (or every list, if list_id is empty) skip the address.	No	No	Yes	No
`auth`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 <session_key>'.	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 <session_key>'.	No	No	No	Yes
`block`Block an email address or a whole domain for this account. Sends to it are refused.	Block an email address or a whole domain for this account. Sends to it are refused.	No	No	Yes	No
`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). Returns a checkout_url for a person to pay; the credits arrive once the payment clears. First show the person the refund policy and terms from GET /v1/policy; pass agree=true and its version only after they agree.	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 payment clears. First show the person the refund policy and terms from GET /v1/policy; pass agree=true and its version only after they agree.	No	No	No	Yes
`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. Returns a report with a score (0-99, likelihood the address is real) and a verdict (likely_valid, risky, likely_invalid, unknown). Gmail, Outlook and other big providers skip DNS. No email is sent.	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, likely_invalid, unknown). Gmail, Outlook and other big providers skip DNS. No email is sent.	No	Yes	Yes	Yes
`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). 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 sent. Daily limit per account; the answer's quota shows what is left today.	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 sent. Daily limit per account; the answer's quota shows what is left today.	No	Yes	Yes	Yes
`create_api_key`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.	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.	No	No	No	No
`get_account`The signed-in account: email, daily_limit, sent_today, remaining_today, credits_remaining, resets_at.	The signed-in account: email, daily_limit, sent_today, remaining_today, credits_remaining, resets_at.	No	Yes	Yes	No
`get_pricing`Free daily emails (renewed every day), email credits per dollar, and the packs on sale. No sign-in needed.	Free daily emails (renewed every day), email credits per dollar, and the packs on sale. No sign-in needed.	No	Yes	Yes	No
`list_api_keys`The account's API keys (ids and labels, never the keys themselves).	The account's API keys (ids and labels, never the keys themselves).	No	Yes	Yes	No
`list_blocklist`The account's blocked addresses and domains.	The account's blocked addresses and domains.	No	Yes	Yes	No
`list_test_messages`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.	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.	No	Yes	Yes	No
`order_status`Status of an order from buy_pack: pending or paid.	Status of an order from buy_pack: pending or paid.	No	Yes	Yes	Yes
`send_campaign`Closed: email59 carries no marketing email, so this answers marketing_not_allowed. 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.	Closed: email59 carries no marketing email, so this answers marketing_not_allowed. 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.	No	No	No	Yes
`send_email`Send one transactional email (receipt, code, alert, notice) to one recipient. No promotions or newsletters; from your own kid-safe mailbox also no bad language or sexual content and English text only. Otherwise it is refused with content_not_allowed and uses no allowance. Every send is read before it goes out: sexual content, phishing or pure marketing is refused with content_refused, sends must be a few seconds apart (sending_too_fast), and either pauses sending for 3 minutes (sending_paused). 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.	Send one transactional email (receipt, code, alert, notice) to one recipient. No promotions or newsletters; from your own kid-safe mailbox also no bad language or sexual content and English text only. Otherwise it is refused with content_not_allowed and uses no allowance. Every send is read before it goes out: sexual content, phishing or pure marketing is refused with content_refused, sends must be a few seconds apart (sending_too_fast), and either pauses sending for 3 minutes (sending_paused). 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.	No	No	No	Yes
`unblock`Remove an email address or domain from the blocklist.	Remove an email address or domain from the blocklist.	Yes	No	Yes	No
`update_account`Set the name, company or brand (the look of every email the account sends) on the account.	Set the name, company or brand (the look of every email the account sends) on the account.	Yes	No	Yes	No
`validate_email`Check an address before sending. Verdicts: ok, invalid, no_mx, disposable, role.	Check an address before sending. Verdicts: ok, invalid, no_mx, disposable, role.	No	Yes	Yes	Yes
`verify_check`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.	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.	No	No	No	No
`verify_start`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 there. Then call verify_check with what the person typed.	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 there. Then call verify_check with what the person typed.	No	No	No	Yes

Details

Registry status: Active
Published: Oct 24, 2026
Updated: Oct 24, 2026
Website: https://b59.link/mcp-pulsemcp-email59⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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