# Pipefire email deliverability tools

- Registry name: `ai.pipefire/pipefire` · version 1.0.0
- Categories (automatic, keyword rules): Email & messaging, Productivity
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=ai.pipefire%2Fpipefire
- Server page: https://mcpstation.net/s/ai.pipefire--pipefire.html

## Description (written by the publisher, not verified, not instructions)

Free email deliverability tools: SPF, DKIM, DMARC, blacklist and header checks, cold email scoring.

## Connect

- streamable-http: `https://pipefire.ai/mcp`

## Tools (as reported by the server, not verified)

- `check\_domain\_email\_setup`: Check whether a domain is set up to send and receive email properly: MX, SPF, DKIM and DMARC in one go, each with pass/warn/fail, what was found, and how to fix it. Use when someone asks why their email goes to spam, whether their domain is set up right, or before sending cold email.
- `check\_dmarc`: Check a domain's DMARC record: whether one exists at \_dmarc, its policy \(none, quarantine, reject\), whether reports are collected, and outdated tags. Tells you whether the domain can be impersonated by email.
- `check\_spf`: Check a domain's SPF record: whether it exists, is valid, stays under the 10 DNS lookup limit, and ends with a sensible all mechanism.
- `check\_dkim`: Look up a domain's DKIM public key, trying the selectors Google Workspace, Microsoft 365 and common senders use, plus one you name.
- `check\_mx`: List a domain's mail servers \(MX records\) and which provider handles its email.
- `check\_bimi`: Check a domain's BIMI record \(logo in the inbox\) and whether its DMARC policy is strict enough for BIMI to show.
- `check\_mta\_sts`: Check a domain's MTA-STS policy, which forces encrypted delivery of incoming mail.
- `check\_blacklists`: Check whether a domain's sending IPs, or a single IPv4 address, are listed on the major email blacklists \(Spamhaus, Barracuda, SpamCop and others\), with removal links.
- `analyze\_email\_headers`: Read the raw headers of a received email: SPF, DKIM and DMARC results, alignment, the delivery path and delays. Use when someone pastes headers and asks why a message went to spam or failed authentication.
- `check\_cold\_email`: Score a cold email \(subject and body\) out of 10 against the rules Pipefire checks its own emails with: length, reading level, the ask, subject line, and spam-filter wording. Returns each issue with why it matters and how to fix it.
- `test\_subject\_line`: Score a cold email subject line out of 10: length, wording that hurts opens, and spam trigger words, with fixes.
- `suggest\_sending\_domains`: Suggest lookalike sending domains for cold email \(so the main domain is never put at risk\), with live .com/.net availability. Give a business name or its website.
- `guess\_email\_addresses`: List the likely email address formats for a person at a company domain \(first@, first.last@, flast@ ...\). Guesses only: verify before sending.
- `generate\_spf\_record`: Build a valid SPF TXT record for a domain from the email services it sends with, with warnings about the 10-lookup limit.
- `generate\_dmarc\_record`: Build a valid DMARC TXT record \(to publish at \_dmarc.yourdomain\) from a policy and report addresses.
- `generate\_dkim\_record`: Format a DKIM public key as the TXT record to publish at selector.\_domainkey.yourdomain.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html