# Pipefire email deliverability tools Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## Pipefire email deliverability tools

Check email setup, diagnose delivery problems, and score cold emails for spam filters.

- Record: https://musedirectory.ai/connector/pipefire-email-deliverability-tools
- Category: Productivity
- Developer: Pipefire (https://pipefire.ai/mcp-server)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 2262ms, checked 2026-10-29T16:21:30Z
- Endpoint: https://pipefire.ai/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-10-29T16:21:30Z)
- Source: Found in the official MCP Registry (ai.pipefire/pipefire) https://registry.modelcontextprotocol.io/v0/servers?search=ai.pipefire%2Fpipefire

Diagnoses why emails go to spam by checking SPF, DKIM, DMARC, MX records and blacklists. Analyzes email headers, scores cold emails against spam triggers, and generates DNS records for proper email authentication.

Example request: "Why are my emails going to spam and how do I fix my domain's email setup?"

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Pipefire email deliverability tools to help me. It is a free service with an MCP server at https://pipefire.ai/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- 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 em
- 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DMARC record: whether one exists at _dmarc, its policy (none, quarantine, reject), whether reports are collected, and outdated tags.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.

Screening checks:
- MCP handshake: pass (Answered in 2262ms)
- Domain against threat feeds (Cloudflare security DNS): pass (pipefire.ai not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (16 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)