SpacePost

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

• Connection: Computer or cloud
• Transport: stdio, Streamable HTTP
• Category: Chat & email
• You need to fill in: SPACEPOST_API_KEY, Authorization

Install

Pick the AI app you use, then copy the settings.

You need

• Runs in the cloudNothing to install; it connects over the internet
• npmNode.js installed (for the npx command)

Which app do you use?

{
  "mcpServers": {
    "spacepost": {
      "command": "npx",
      "args": [
        "-y",
        "@spacepost/mcp"
      ],
      "env": {
        "SPACEPOST_API_KEY": "your-value",
        "SPACEPOST_READ_ONLY": "your-value",
        "SPACEPOST_TOOLSETS": "your-value",
        "SPACEPOST_PERMISSION": "your-value",
        "SPACEPOST_DEFAULT_FROM": "your-value"
      }
    }
  }
}

claude mcp add --transport http spacepost https://api.spacepost.dev/mcp --header 'Authorization: Bearer {api_key}'

claude mcp add spacepost --env SPACEPOST_API_KEY=your-value --env SPACEPOST_READ_ONLY=your-value --env SPACEPOST_TOOLSETS=your-value --env SPACEPOST_PERMISSION=your-value --env SPACEPOST_DEFAULT_FROM=your-value -- npx -y @spacepost/mcp

{
  "mcpServers": {
    "spacepost": {
      "url": "https://api.spacepost.dev/mcp",
      "headers": {
        "Authorization": "Bearer {api_key}"
      }
    }
  }
}

{
  "mcpServers": {
    "spacepost": {
      "command": "npx",
      "args": [
        "-y",
        "@spacepost/mcp"
      ],
      "env": {
        "SPACEPOST_API_KEY": "your-value",
        "SPACEPOST_READ_ONLY": "your-value",
        "SPACEPOST_TOOLSETS": "your-value",
        "SPACEPOST_PERMISSION": "your-value",
        "SPACEPOST_DEFAULT_FROM": "your-value"
      }
    }
  }
}

{
  "servers": {
    "spacepost": {
      "type": "http",
      "url": "https://api.spacepost.dev/mcp",
      "headers": {
        "Authorization": "Bearer {api_key}"
      }
    }
  }
}

{
  "servers": {
    "spacepost": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@spacepost/mcp"
      ],
      "env": {
        "SPACEPOST_API_KEY": "your-value",
        "SPACEPOST_READ_ONLY": "your-value",
        "SPACEPOST_TOOLSETS": "your-value",
        "SPACEPOST_PERMISSION": "your-value",
        "SPACEPOST_DEFAULT_FROM": "your-value"
      }
    }
  }
}

Your choice stays on this device in a cookie; no account needed.

Values you fill in

• SPACEPOST_API_KEY secret required env
  SpacePost API key (sp_live_...), created in the SpacePost dashboard under API keys. A sending_access key limits the server to sending.
• SPACEPOST_READ_ONLY env
  Set to true to expose only read tools (GET endpoints).
• SPACEPOST_TOOLSETS env
  Comma-separated API areas to expose, e.g. emails,domains.
• SPACEPOST_PERMISSION env
  Set to sending_access to expose only the tools a sending_access key can call.
• SPACEPOST_DEFAULT_FROM env
  Default sender, e.g. Acme , used when a send omits from.
• Authorization secret required HTTP header
  SpacePost API key (sp_live_...), created in the SpacePost dashboard under API keys. A sending_access key limits the server to sending.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

• list_emails

  List emails. Returns sent and scheduled emails, newest first, without bodies. Requires a `full_access` API key. API: `GET /emails` (operationId `listEmails`, Emails).

• send_email

  Send an email. Validates and queues one email. Each recipient counts towards your quota. Use `scheduled_at` to send later (up to 30 days ahead). Pass `tenant_id` to send on behalf of a tenant (not needed when the `from` domain belongs to one). Fails with `422` if `tenant_id` conf

• send_batch_emails

  Send batch emails. Sends up to 100 emails in one call. All-or-nothing, if any email is invalid none are sent. Attachments, `scheduled_at` and a per-email `tenant_id` are supported; the paused-tenant and tenant-cap errors apply to the whole batch. Put the emails in `body` as an ar

• get_email

  Retrieve an email. Requires a `full_access` API key. API: `GET /emails/{id}` (operationId `getEmail`, Emails).

• update_email

  Reschedule an email. Changes `scheduled_at` of an email that is still `scheduled`. Requires a `full_access` API key. API: `PATCH /emails/{id}` (operationId `updateEmail`, Emails).

• cancel_email

  Cancel a scheduled email. Requires a `full_access` API key. API: `POST /emails/{id}/cancel` (operationId `cancelEmail`, Emails).

• list_domains

  List domains. Requires a `full_access` API key. API: `GET /domains` (operationId `listDomains`, Domains).

• create_domain

  Create a domain. Registers a domain and returns the DNS records to add (three DKIM CNAMEs, plus MX and SPF on the MAIL FROM subdomain). Domain names are globally unique. The number of domains is limited by your plan (Free 3, Pro 10, Scale 1,000). The response lists the DNS record

• get_domain

  Retrieve a domain. Requires a `full_access` API key. API: `GET /domains/{id}` (operationId `getDomain`, Domains).

• update_domain

  Update a domain. Toggles open and click tracking. Requires a `full_access` API key. API: `PATCH /domains/{id}` (operationId `updateDomain`, Domains).

• delete_domain

  Delete a domain. Requires a `full_access` API key. API: `DELETE /domains/{id}` (operationId `deleteDomain`, Domains).

• verify_domain

  Verify a domain. Re-checks DNS now. Retrieve the domain afterwards to read the new `status` and per-record statuses. Requires a `full_access` API key. API: `POST /domains/{id}/verify` (operationId `verifyDomain`, Domains).

• list_api_keys

  List API keys. Requires a `full_access` API key. API: `GET /api-keys` (operationId `listApiKeys`, API Keys).

• create_api_key

  Create an API key. The `token` is returned only in this response. Requires a `full_access` API key. API: `POST /api-keys` (operationId `createApiKey`, API Keys).

• delete_api_key

  Delete an API key. The key stops working immediately. The response body is an empty object. Requires a `full_access` API key. API: `DELETE /api-keys/{id}` (operationId `deleteApiKey`, API Keys).

• list_webhooks

  List webhooks. Requires a `full_access` API key. API: `GET /webhooks` (operationId `listWebhooks`, Webhooks).

• create_webhook

  Create a webhook. In production the endpoint must use https and resolve to a public address. Requires a `full_access` API key. API: `POST /webhooks` (operationId `createWebhook`, Webhooks).

• get_webhook

  Retrieve a webhook. Requires a `full_access` API key. API: `GET /webhooks/{id}` (operationId `getWebhook`, Webhooks).

• update_webhook

  Update a webhook. Requires a `full_access` API key. API: `PATCH /webhooks/{id}` (operationId `updateWebhook`, Webhooks).

• delete_webhook

  Delete a webhook. Requires a `full_access` API key. API: `DELETE /webhooks/{id}` (operationId `deleteWebhook`, Webhooks).

• list_audiences

  List audiences. Requires a `full_access` API key. API: `GET /audiences` (operationId `listAudiences`, Audiences).

• create_audience

  Create an audience. Requires a `full_access` API key. API: `POST /audiences` (operationId `createAudience`, Audiences).

• get_audience

  Retrieve an audience. Requires a `full_access` API key. API: `GET /audiences/{id}` (operationId `getAudience`, Audiences).

• delete_audience

  Delete an audience. Also deletes its contacts. Requires a `full_access` API key. API: `DELETE /audiences/{id}` (operationId `deleteAudience`, Audiences).

• list_contacts

  List contacts. Requires a `full_access` API key. API: `GET /audiences/{audienceId}/contacts` (operationId `listContacts`, Contacts).

• create_contact

  Create a contact. Emails are lower-cased. An address can only appear once per audience. Requires a `full_access` API key. API: `POST /audiences/{audienceId}/contacts` (operationId `createContact`, Contacts).

• get_contact

  Retrieve a contact. Requires a `full_access` API key. API: `GET /audiences/{audienceId}/contacts/{idOrEmail}` (operationId `getContact`, Contacts).

• update_contact

  Update a contact. Requires a `full_access` API key. API: `PATCH /audiences/{audienceId}/contacts/{idOrEmail}` (operationId `updateContact`, Contacts).

• delete_contact

  Delete a contact. Requires a `full_access` API key. API: `DELETE /audiences/{audienceId}/contacts/{idOrEmail}` (operationId `deleteContact`, Contacts).

• list_broadcasts

  List broadcasts. Requires a `full_access` API key. API: `GET /broadcasts` (operationId `listBroadcasts`, Broadcasts).

• create_broadcast

  Create a broadcast. Creates a draft. The `from` address must belong to a verified domain of your team and `audience_id` to one of your audiences. Requires a `full_access` API key. API: `POST /broadcasts` (operationId `createBroadcast`, Broadcasts).

• get_broadcast

  Retrieve a broadcast. Requires a `full_access` API key. API: `GET /broadcasts/{id}` (operationId `getBroadcast`, Broadcasts).

• update_broadcast

  Update a broadcast. Only drafts can be updated. Request body: Any field of the create request; only drafts can be updated. Requires a `full_access` API key. API: `PATCH /broadcasts/{id}` (operationId `updateBroadcast`, Broadcasts).

• delete_broadcast

  Delete a broadcast. Only drafts and broadcasts that are scheduled for the future can be deleted. Requires a `full_access` API key. API: `DELETE /broadcasts/{id}` (operationId `deleteBroadcast`, Broadcasts).

• get_broadcast_readiness

  Check a broadcast before sending. SpacePost extension (not part of Resend). Returns a deliverability checklist: sender domain and DMARC, subject, Gmail clipping (HTML over 102 KB), image-heavy bodies, link shorteners, spam phrases, unsubscribe link and audience quality. `ready` i

• send_broadcast

  Send or schedule a broadcast. Queues a draft for delivery to every subscribed contact of its audience. The broadcast needs `html` or `text`. Without `scheduled_at` it starts immediately; the status becomes `queued`, then `sending` and `sent`. Sends to every subscribed contact in

• list_suppressions

  List suppressions. Requires a `full_access` API key. API: `GET /suppressions` (operationId `listSuppressions`, Suppressions).

• create_suppression

  Add a suppression. Adds the address with reason `manual`. Adding an address that is already suppressed returns the existing entry. Requires a `full_access` API key. API: `POST /suppressions` (operationId `createSuppression`, Suppressions).

• delete_suppression

  Remove a suppression. Requires a `full_access` API key. API: `DELETE /suppressions/{idOrEmail}` (operationId `deleteSuppression`, Suppressions).

• list_tenants

  List tenants. Requires a `full_access` API key. API: `GET /tenants` (operationId `listTenants`, Tenants).

• create_tenant

  Create a tenant. Creates one of your customers, with its own SES tenant (isolated reputation). `external_id` must be unique within your account. Requires a `full_access` API key. API: `POST /tenants` (operationId `createTenant`, Tenants).

• get_tenant

  Retrieve a tenant. Requires a `full_access` API key. API: `GET /tenants/{ref}` (operationId `getTenant`, Tenants).

• update_tenant

  Update a tenant. Changes the name, `external_id` or `daily_limit` (`null` removes the cap). Requires a `full_access` API key. API: `PATCH /tenants/{ref}` (operationId `updateTenant`, Tenants).

• delete_tenant

  Delete a tenant. Fails with `422` while the tenant still has domains; delete those first. Requires a `full_access` API key. API: `DELETE /tenants/{ref}` (operationId `deleteTenant`, Tenants).

• pause_tenant

  Pause a tenant. Stops all sending for the tenant. Sends return `403 sending_paused`; emails already queued fail. The body is optional. Requires a `full_access` API key. API: `POST /tenants/{ref}/pause` (operationId `pauseTenant`, Tenants).

• unpause_tenant

  Unpause a tenant. Resumes sending. A tenant that was paused by the reputation guard (bounce or complaint rate) can only be unpaused by a `trusted` or `internal` team; others get `403 invalid_access` and should contact support. Requires a `full_access` API key. API: `POST /tenants

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified against the domain spacepost.dev (the registry checks domain ownership)

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• ✓ Pass

  Endpoint responds

  Responded in 285 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 46 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

• More stars than 0% of the other 1774 servers in this category
• Published to the registry more recently than 89% of the other 1774 servers in this category
• Basic checks equal to or better than 100% of the other 1774 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

README from the maker

# hosted

{

{

docker build -t spacepost-mcp .

x-mcp: { hidden: false, description: "Extra guidance for agents.", destructive: true, idempotent: true, openWorld: true }

bun install