MCP server

Email Deliverability

io.inboxguard/email-deliverability

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

Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).

At a glance

Type

MCP server

Publisher

inboxguard.io (verified by the MCP Registry)

Status

Working at last check

Tools

28

Token cost

About 4,351 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 email-deliverability https://mcp.inboxguard.io/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.email-deliverability]
url = "https://mcp.inboxguard.io/mcp"

Gemini CLI

{"mcpServers":{"email-deliverability":{"httpUrl":"https://mcp.inboxguard.io/mcp"}}}

Cursor

{"mcpServers":{"email-deliverability":{"url":"https://mcp.inboxguard.io/mcp"}}}

VS Code

{"servers":{"email-deliverability":{"type":"http","url":"https://mcp.inboxguard.io/mcp"}}}

Antigravity

agy mcp add email-deliverability https://mcp.inboxguard.io/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":"email-deliverability","server_url":"https://mcp.inboxguard.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"email-deliverability","server_url":"https://mcp.inboxguard.io/mcp"}

Tools

• analyze_headers ~274 tokens
  Re-verify SPF, DKIM, DMARC, and ARC from a raw RFC 5322 email (full message or just the headers block). Returns InboxGuard's independent verdict (`ours`), the sender's own Authentication-Results (`theirs`), whether they `agree`, and parsed envelope/headers — useful for spotting forged or mismatched
• apply_dns_fix ~292 tokens
  Apply a DNS fix plan to a tracked domain by publishing records at the connected registrar. DESTRUCTIVE: it creates/updates/deletes DNS records. Two-step by design — first call get_dns_fix_plan, then pass its `connectionId` and `ops` here verbatim. The server re-derives the diff from the latest scan
• check_blocklists ~108 tokens
  Check a domain (apex + MX-host IPs) against supported DNS blocklists and return listings, targets checked, and issues (authoritative-side queries; no public-resolver false positives).
• connect_inbox_placement ~179 tokens
  Store the org's seed-list inbox-placement provider + API key (provider: 'mailreach' or 'glockapps'; GlockApps also needs projectId). Enables start_inbox_placement_test. Requires an owner/admin API key with write or full scope.
• connect_snds ~188 tokens
  Store this org's Microsoft SNDS (Smart Network Data Services) automated-data-access key so InboxGuard syncs per-IP Outlook/Hotmail reputation daily. Get the key from the SNDS Automated Data Access page (https://sendersupport.olc.protection.outlook.com/snds/). Requires an owner/admin API key with wri
• create_notification_channel ~274 tokens
  Create a channel that InboxGuard alerts are delivered to: webhook (HMAC-signed), Slack, Microsoft Teams, PagerDuty, SMS, or email. Returns the channel id, and for kind=webhook the `signing_secret` used to verify deliveries. Requires an owner/admin API key with write or full scope.
• create_share_link ~144 tokens
  Create a read-only public share link for a tracked domain's latest report (anyone with the URL can view it; no account). Returns a `token` and the public `url` (https://inboxguard.io/r/<token>). Requires an owner/admin API key with write or full scope, on a plan that includes public reports.
• get_deliverability_report ~260 tokens
  Return a structured deliverability report for a tracked domain: the latest score + letter grade + `scoreSubtitle` (explains the denominator when a check was excluded, e.g. "80/100 · scored on 65 of 83 applicable points · 1 check unverified"), each check's status (pass/warn/fail/unverified/not_applic
• get_deliverability_score ~83 tokens
  Return the overall deliverability score and letter grade for a domain (runs a fresh scan).
• get_dmarc_summary ~168 tokens
  Summarize ingested DMARC aggregate (RUA) reports for a domain tracked in your InboxGuard account: report volume, pass rate, top sending sources, and the rua inbox to publish. The domain must already be added to the account, and the plan must include DMARC ingest.
• get_dns_fix_plan ~192 tokens
  Compute the exact DNS-record changes needed to fix a tracked domain's deliverability, based on its latest scan and the org's connected registrar (Cloudflare/Route 53/GoDaddy/Namecheap). Read-only — nothing changes. Returns the `ops` to pass verbatim to apply_dns_fix, plus `manualReview` items that n
• get_domain ~130 tokens
  Full detail for one tracked domain: the domain record, the latest scan with all per-check findings (spf, dmarc, dkim, ptr, mta_sts, tls_rpt, mx_tls, blocklist), recent score history, open/recent alerts, and Google Postmaster stats when connected.
• get_inbox_placement_status ~79 tokens
  Report whether a seed-list inbox-placement provider is connected for the org, which provider, and how many tests have run. Lists the supported providers when not connected.
• get_inbox_placement_test ~142 tokens
  Poll a seed-list inbox-placement test by testId. Returns status (running/completed/failed) and, once measured, the Inbox/Spam/Missing counts and inbox-placement score (0–100). Call after sending your campaign to the seed addresses from start_inbox_placement_test.
• get_portfolio ~132 tokens
  Org-wide deliverability rollup across every monitored domain: average score + overall grade, the grade distribution (how many domains are A/B/C/D/F/unscored), total open alerts, the domains needing attention (lowest score / open alerts first), and a per-client-group breakdown. Use this for an at-a-g
• get_scan_job ~117 tokens
  Poll an async batch scan started with scan_domains_batch: returns status (queued/running/succeeded/partial/failed), completed count, and per-domain results (domain, ok, score, grade) as they finish.
• get_snds_ip_stats ~102 tokens
  Return the latest per-IP reputation from Microsoft SNDS for the org's sending IPs: filter result (GREEN/YELLOW/RED), complaint-rate band, spam-trap hits, message volume, and current block status. Requires SNDS to be connected (see connect_snds / get_snds_status).
• get_snds_status ~95 tokens
  Report whether Microsoft SNDS is connected for the org, the last sync time + status, how many sending IPs are tracked, and how many are currently blocked by Outlook/Hotmail. Use before get_snds_ip_stats to confirm the integration is live.
• list_alerts ~167 tokens
  List the account's deliverability alerts (score drops, check failures, blocklist listings). Defaults to open alerts only.
• list_domains ~53 tokens
  List the account's tracked domains with latest scan score, last scan time, and open alert count.
• list_inbox_placement_tests ~65 tokens
  List recent seed-list inbox-placement tests for the org (most recent first) with their status and Inbox/Spam/Missing scores.
• list_registrar_connections ~111 tokens
  List the registrar accounts (Cloudflare, Route 53, GoDaddy, Namecheap) connected to the org — provider, verification, last-used time — plus the supported providers. Use this to check whether the detect-and-fix loop (get_dns_fix_plan / apply_dns_fix) is available before attempting it.
• list_scans ~125 tokens
  List recent scans (id, domain, run time, score) across all tracked domains, or for one domain when a name is given.
• remove_domain ~136 tokens
  Stop monitoring a domain and delete it (and its scan history) from the account. DESTRUCTIVE and not reversible. Requires an owner/admin API key with write or full scope. (To ADD a domain, run scan_domain with this API key — authenticated scans auto-track the domain.)
• resolve_alert ~135 tokens
  Mark an alert resolved (or reopen it with resolved=false). Requires an API key with write/full scope. Resolving an already-resolved alert is a no-op.
• scan_domain ~275 tokens
  Run a full email-deliverability scan (SPF, DKIM, DMARC, MTA-STS, TLS-RPT, MX TLS, BIMI, DNS blocklists) for a domain and return a 0-100 score with per-check findings. A check can come back `not_applicable` (does not apply to this domain, e.g. MTA-STS on a domain with no MX — excluded from the score,
• scan_domains_batch ~170 tokens
  Queue an asynchronous batch scan of up to 50 domains and get a jobId immediately (avoids the 30s per-call limit). Poll get_scan_job with the jobId until status is succeeded/partial/failed to read per-domain scores. Requires an API key with write or full scope. These scans are NOT added to monitoring
• start_inbox_placement_test ~155 tokens
  Start a seed-list inbox-placement test. Returns a testId, the seed addresses to mail your campaign to, and (if the provider requires it) a header to insert. After sending to the seeds, poll get_inbox_placement_test for the Inbox/Spam/Missing verdict. Requires inbox-placement to be connected and an o

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