WarmInboxes Free MCP: Fleet Planner

Connect Remote server

claude mcp add --transport http fleet-planner https://warminboxes.com/mcp/planner

{
  "mcpServers": {
    "fleet-planner": {
      "url": "https://warminboxes.com/mcp/planner"
    }
  }
}

{
  "servers": {
    "fleet-planner": {
      "type": "http",
      "url": "https://warminboxes.com/mcp/planner"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://warminboxes.com/mcp/planner

Tools 16 found in our last check

• check_domain_expiry

  Get a domain's registrar, creation date, expiry date and days remaining, over RDAP with a WHOIS fallback for ccTLDs that publish no RDAP service. Domain age is useful context when diagnosing deliverability, read alongside the provider, reputation and sending history; no publishe…

• check_google_domain

  Tell whether a domain is already attached to a Google Workspace account, or is clear for a fresh Google tenant.

• lookup_mx

  Look up a domain's MX records with priorities and resolved IPs, and identify the mailbox provider (Google Workspace, Microsoft 365, Zoho, Fastmail and others) and any security gateway in front of it (Mimecast, Proofpoint, Barracuda and others). Pass `domains` instead of `domain`…

• segment_esp

  Split a list of domains by the email provider behind them (Google, Microsoft, a security gateway, or another provider) from their MX records. WarmInboxes routes Google-hosted recipients to Google Workspace inboxes and everyone else to Azure; plan_from_list sizes that split.

• plan_from_list

  Estimates a sending fleet for a recipient list. Looks up the MX records of up to 100 recipient domains (or addresses) to measure the provider mix, then sizes a Google Workspace pool for the Google-hosted recipients and an Azure pool for everyone else (Microsoft 365, other provid…

• plan_infrastructure

  Estimates how many inboxes and domains a daily cold email volume needs and the monthly cost at WarmInboxes' published prices. Inputs: emailsPerDay; optionally the provider (esp), prewarmed or fresh, billing cycle, emails per inbox per day and inboxes per domain. With currentInbo…

• quote_inboxes

  Prices a given number of inboxes at WarmInboxes' published prices: the domains (or Azure tenants) they sit on, daily sending capacity at the provider's pace, monthly cost and delivery time. Use it when the person already knows the count ("preview 100 inboxes"); for a send volume…

• get_diagnostic_playbook

  Returns WarmInboxes' diagnostic playbook for a cold email problem: the questions to ask the person, the checks to run in order from cheapest to most expensive (with the tool for each), what WarmInboxes' published studies measured a finding to cost (for example that a SURBL listi…

• generate_dns_records

  Write an SPF record from the providers that send for a domain (with an estimate of its DNS lookups against the limit of 10), a DMARC record from a policy, and where a provider publishes DKIM. Returns host, type and value to publish. It writes records; to check what is published,…

• plan_rotation

  Builds a warm rotation, WarmInboxes' method: the inboxes split into Batch 1 and Batch 2, both tagged in the sequencer and added to the campaign, the active batch at full daily limits while the resting batch sends follow-ups only, swapped by changing the limits on each tag. The s…

• plan_verification_waterfall

  Price an email verification waterfall: the list run through verifiers in sequence with unknowns passed down the chain, every order compared, cheapest cost per usable email first. Uses typical figures for three verifiers unless you pass your own prices and resolve rates (POST JSO…

• convert_csv

  Rename a lead CSV's columns to the fields a sequencer imports (Instantly, Smartlead, EmailBison, or generic snake_case). Every row and column is kept; only the header changes, and columns with no standard field keep a snake_case name for custom variables. Returns the mapping, an…

• find_tools

  Find the WarmInboxes free tool for a task ("check my email headers", "clean a CSV", "will this land in spam") and say how to use it: the MCP tool to call here, or the page to send the person to when it runs only in the browser. Call with no task to list every tool.

• find_resources

  Search what WarmInboxes publishes: operator notes (WarmInboxes' rules from running fleets, with the research behind them), cold email guides, deliverability playbooks, original studies and their datasets, costed infrastructure recipes, tool demo videos, inbox guides per sequence…

• read_resource

  Read a WarmInboxes operator note, guide, study, playbook, dataset, recipe, comparison or changelog entry in full, as markdown. Long pages come in parts split at headings: the first call says how many, and nextPart gives the one to ask for. Datasets also return their data as JSON…

• get_pricing

  The WarmInboxes price list as data: prewarmed and fresh inboxes on Google Workspace, Microsoft 365 and Azure, every billing cycle, the safe daily send pace per inbox, and delivery time. For a costed fleet for a volume, use plan_infrastructure.

Details

More communication servers See all

• Formpit

  Form backend with an inbox: create form endpoints, read submissions and reply by email.

• IGNOREO

  Tools for AI agents, pay per call in USDC (x402): privacy scan, site/email/VIN checks, chess, more

• Palimpalem

  Websites for local businesses: draft, keep, edit by chat, publish; domain, DNS, e-mail, Plus.

• Quokka Korea Tools

  Korean holidays, business days & legal deadlines, won amounts in words, NEIS/SMS byte counts

• Turbo Notify: WhatsApp for AI agents

  Send, receive, edit and react to WhatsApp messages from your own number. OAuth or API key sign-in.

• Turbo Notify: WhatsApp for AI agents

  Send, receive, edit and react to WhatsApp messages from your own number. OAuth or API key sign-in.