Cooper Email

Connect it to your AI

Claude Code

claude mcp add --transport http cooper-email https://cooperemail.com/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://cooperemail.com/mcp

This server expects extra headers, usually an API key from its maker.

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "cooper-email": {
      "url": "https://cooperemail.com/mcp"
    }
  }
}

Tools it offers

60 tools, as the server itself reported during our check on Oct 31, 2026.

• cooper_onboardUse this when the user wants the agent to have its own email address and this connection is not signed in yet (no OAuth token or API key). No auth needed. Creates a Cooper account, one inbox <username>@cooperemail.com, a
• cooper_create_inboxUse this when the signed-in account needs an additional email address (for example one per agent, project, or customer). Requires auth. Inputs: username (optional; 1–32 characters; becomes <username>@cooperemail.com; omi
• cooper_create_inboxesUse this when the signed-in account needs several email addresses at once, or addresses that should disappear after a deadline (one inbox per signup, trial, or job). Requires auth. Inputs: count (required; how many inbox
• cooper_list_inboxesUse this when you need to know which inboxes exist on the signed-in account, for example to pick an inbox_id before sending or reading mail, or to tell the user their address. Read-only; requires auth. Inputs: status (op
• cooper_send_messageUse this when the user asks the agent to send an email from its Cooper address. Requires auth. Delivers real email on the public Internet and stores a copy. Inputs: inbox_id (required; inbox id, username, or email), to (
• cooper_list_messagesUse this when you need to check an inbox for new or recent mail (sent and received), for example after sending a message and waiting for a reply. Read-only; requires auth. Inputs: inbox_id (optional; inbox id, username,
• cooper_get_messageUse this when you need the full content of one message, typically an id from cooper_list_messages or cooper_search. Read-only; requires auth. Inputs: inbox_id (required; inbox id, username, or email), message_id (require
• cooper_searchUse this when you need to find mail by keyword, sender, recipient, or subject across the account, or inside one inbox. Read-only; requires auth. Inputs: q (required; every word must match subject, body text, from, or to)
• cooper_search_messagesUse this when you need to find mail inside one inbox by keyword, sender, recipient, or subject, and you want the matching words highlighted. Read-only; requires auth. Inputs: inbox_id (required; inbox id, username, or em
• cooper_inject_inboundUse this only for testing: when you need to simulate an email arriving in a Cooper inbox without sending real mail (for example to try a webhook or task flow end to end). Requires auth. Stores the message as received mai
• cooper_register_webhookUse this when the agent or app should be notified immediately (HTTP POST) when mail arrives instead of polling cooper_list_messages. Requires auth. Inputs: url (required; public http or https URL; localhost and private a
• cooper_enable_instant_repliesUse this when an owner message should wake the agent within seconds. Idempotent. Requires auth. Inputs: inbox_id (required), url (public http or https URL, required unless enabled is false), headers (optional; up to 5 ex
• cooper_billing_statusUse this when you need to know the account's plan, how much of its monthly quota is used, or why a send or inbox create returned 402. Read-only; requires auth; no inputs. Returns {plan, plan_name, status, usage:{period,
• cooper_upgrade_linkUse this when the human wants to upgrade, or a limit was hit and they agree to pay. Requires auth. Creates a Stripe Checkout session; no charge happens until the human completes checkout in their browser. Inputs: plan (r
• cooper_add_ownerUse this when a human should receive the agent's progress updates by email and be able to reply with instructions. Requires auth. Sends that person one confirmation email with a link and code; they receive nothing else u
• cooper_list_ownersUse this when you need to check who the human owners of an inbox are and whether they have confirmed, before relying on cooper_notify_owner. Read-only; requires auth. Inputs: inbox_id (required). Returns {data:[{id, emai
• cooper_notify_ownerUse this when the agent should tell its human owner(s) about progress, completion, a blocker, or a question by email. Requires auth. Sends a status email to every verified owner of the inbox (daily-digest owners get it i
• cooper_get_tasksUse this when you are waiting for a human's instructions or answer by email: it lists tasks created when a verified owner or allowlisted sender emails the inbox and the mail passes DMARC (or DKIM aligned with From). Read
• cooper_reply_taskUse this when you have an answer or result for a task from cooper_get_tasks and want to reply to the human in the same email thread. Requires auth. Sends a real email to the task's sender. Inputs: task_id (required), tex
• cooper_add_domainUse this when the user wants mail on their own hostname and the account is on Starter or Pro. Requires auth. One call returns the SPF, DKIM, DMARC, and MX records to publish, plus a verify TXT. Inputs: domain (required h
• cooper_create_workspaceUse this when the signed-in parent account should give a project or another agent its own API key and a fixed inbox quota. Requires auth. Inputs: name (required; 1–64 characters), inbox_quota (required integer; how many
• cooper_list_workspacesUse this when you need the sub-accounts created by the signed-in parent, including each inbox quota and how many inboxes are in use. Read-only; requires auth; no inputs. Returns {data:[{id, name, inbox_quota, account_id,
• cooper_get_workspaceUse this when you need one sub-account created by the signed-in parent, including its inbox quota and how many inboxes are in use. Read-only; requires auth. Inputs: workspace_id (required). Returns {id, name, inbox_quota
• cooper_update_workspaceUse this when a parent should rename a sub-account or change how many live inboxes it may hold. Requires auth. Inputs: workspace_id (required), name (optional; 1–64 characters), inbox_quota (optional integer, at least 1)
• cooper_delete_workspaceUse this when a parent should remove a sub-account, its API key, and its mail. Requires auth. Destructive. Inputs: workspace_id (required), delete_inboxes (optional boolean). Returns {id, deleted:true, inboxes_deleted}.
• cooper_delete_inboxUse this when an inbox should be removed so its slot is free on the plan and on a workspace inbox quota. Requires auth. Deletes that inbox and its messages. Inputs: inbox_id (required; inbox id, username, or email). Retu
• cooper_update_inboxUse this when an inbox should stop sending and accepting new mail without deleting the address, threads, or history (for example while a human reviews it or during an incident), when it should start again, when you need
• cooper_update_messageUse this when you need to change labels on a stored message, including marking it read. Requires auth. Works on a paused inbox, because this is triage and not a send. Inputs: inbox_id (required; inbox id, username, or em
• cooper_update_messagesUse this when several stored messages should gain or lose the same labels, including marking a batch read. Requires auth. Works on a paused inbox, because this is triage and not a send. Inputs: inbox_id (required; inbox
• cooper_list_domainsUse this when you need the custom domains on the signed-in account, including DNS status. Read-only; requires auth; no inputs. Returns {object:"list", data:[{id, domain, status, status_detail, mail, records, warnings, dn
• cooper_verify_domainUse this when DNS for a custom domain may have been published and you should check it now instead of waiting for the daily cron. Requires auth. Inputs: domain_id (required; the dom_… id from cooper_add_domain or cooper_l
• cooper_reply_messageUse this when you need to answer a message already in a Cooper inbox, with recipients and threading filled in for you. Requires auth. Sends real email and stores the copy on the same thread. Inputs: inbox_id (required; i
• cooper_forward_messageUse this when you need to forward a stored message to someone else, including a forwarded header block and the original attachments, on a new thread. Requires auth. Sends real email. Inputs: inbox_id (required; inbox id,
• cooper_wait_for_messageUse this when you are waiting for a reply or a verification code and you have no public URL for a webhook. Read-only; requires auth. Inputs: inbox_id (required; inbox id, username, or email), after (optional cursor or IS
• cooper_list_eventsUse this when you need the recent event log for this account (message.received, message.held, message.sent, message.blocked, message.bounced, message.complained, task.received, owner.reply, domain.verified, draft.created
• cooper_list_threadsUse this when you need whole conversations instead of individual messages, for example to see who is in a thread and when the last reply arrived. Read-only; requires auth. Inputs: inbox_id (optional; inbox id, username,
• cooper_get_threadUse this when you need every message in one conversation, oldest first, including extracted_text. Read-only; requires auth. Inputs: inbox_id (required; inbox id, username, or email), thread_id (required, thr_…), limit (o
• cooper_search_threadsUse this when you need the conversations that contain a keyword, sender, recipient, or subject, instead of each matching message. Read-only; requires auth. Inputs: inbox_id (required; inbox id, username, or email), q (re
• cooper_delete_threadUse this when a whole conversation should be removed permanently. Requires auth. Deletes every message in the thread, plus attachment bytes, search rows, the assignment, and the folder row. Owner tasks and updates are le
• cooper_update_threadUse this when every message in a conversation should gain or lose the same labels, including marking the thread read, or when the thread should move to inbox, archive, spam, or trash. Requires auth. Works on a paused inb

Questions