servers / postfleet
Postfleet MCP server
communitystreamable_httpremotedestructive capablehealthy
Give an AI agent its own email address: send, reply, read, and wait for mail.
01Tools · 14
How to read this: tool names here are observed from a live tools/list handshake. The Risk label is a heuristic inferred from the tool name (write/destructive verbs), not from executing the tool — a conservative guess, not a verified capability. We never escalate risk from a description. Found one that's wrong? Tell us — we fix on report.
| Tool | Risk | Side effects | Approval |
|---|---|---|---|
| list_mailboxes List the mailboxes you can use, newest first, each with its id and email address. Call this when you need a mailbox_id for any other tool, or to check whether you already have a mailbox before creating one — it is usually the first call in a workflow. Returns every mailbox on the account, or just your own if your API key is scoped to a single mailbox. An empty list means you have none yet — use create_mailbox. | read | false | unknown |
| create_mailbox Create a NEW email mailbox this agent owns. Call this when list_mailboxes shows you have no suitable mailbox yet — mailboxes persist across sessions, so creating a second one for the same purpose strands mail in the first. Returns a working address immediately. Optional slug personalizes the address (agent-<slug>@...). To create the mailbox on a custom domain instead of the shared one (<slug>@yourdomain.com), pass a domain_id from list_domains — the domain must be verified. | write | true | unknown |
| list_domains List the account's custom sending domains with their id, name, and verification status. Call this when you want to create a mailbox on a custom domain (pass the id of a verified domain as create_mailbox's domain_id), or to check whether a domain has finished verifying. Only status "verified" domains can host mailboxes; an empty list means only the shared platform domain is available. | read | false | unknown |
| send_email Send a new email from one of your mailboxes. Call this when starting a NEW conversation; to answer an email you received, use reply_email instead (it threads correctly). Pass a client_id (any unique string you make up) and reuse the SAME client_id if you retry after an error — that guarantees the email is sent at most once. If the mailbox requires human approval, the send is queued as a draft and returns {draft_id, status:"pending_approval"} instead of a message id — that is NOT a failure and must NOT be retried; the email goes out once a human approves it (check with list_drafts). | write | true | unknown |
| reply_email Reply to an email you received. Call this when answering an existing message — recipient, subject, and conversation threading are derived automatically from the original. Pass a client_id (any unique string you make up) and reuse the SAME client_id if you retry after an error — that guarantees the reply is sent at most once. If the mailbox requires human approval, the reply is queued as a draft and returns {draft_id, status:"pending_approval"} instead of a message id — that is NOT a failure and must NOT be retried; it is sent once a human approves it (check with list_drafts). | write | true | unknown |
| list_inbox List recent messages in a mailbox, newest first, with comprehension status per message. Call this when checking what has arrived; use read_email for full content and extracted data. | read | false | unknown |
| read_email Read one email in full: cleaned body, sanitization report (screened against known hidden-content patterns), classification, and data extracted to the mailbox schema. Call this when you need the content or extraction of a specific message. | read | false | unknown |
| wait_for_email Block until a matching email arrives in a mailbox (or time out). Call this when you just sent an email and need the reply, or are expecting an inbound message — instead of polling list_inbox yourself. Returns the full message on match, or {timed_out:true}. | read | false | unknown |
| create_draft Prepare an email as a draft without sending it. Call this when you want to stage a message for later or for a human to review before it goes out — send it afterward with send_draft. Same fields as send_email, or omit to/subject and pass reply_to_message_id to draft a threaded reply. Returns the draft id with status "draft". | write | true | unknown |
| list_drafts List the open drafts in a mailbox (status draft, pending_approval, or sending), newest first. Call this when you need to see messages you have staged or that are queued waiting on human approval, e.g. after a send returned status "pending_approval". | read | false | unknown |
| get_draft Read one draft in full by its id: recipient, subject, body text, and current status. Call this when you need the content of a specific draft — e.g. to review what is queued for approval after list_drafts, or before editing it with update_draft. | read | false | unknown |
| update_draft Edit the to, subject, or text of a draft that has not been sent yet — omitted fields keep their current value. Call this when a draft needs changes, e.g. a human declined to approve it and you are revising it. The reply target cannot be changed (create a new draft to reply to a different message), and a draft that is already sending or sent can no longer be edited. | write | true | unknown |
| send_draft Send a draft you prepared, by its id. Call this when a staged draft is ready to go out. If the mailbox requires human approval, this returns 202 {draft_id, status:"pending_approval"} — the draft is queued for a human to approve, which is NOT a failure and must NOT be retried; it is sent once approved. Otherwise it sends immediately and returns the message id. | write | true | unknown |
| delete_draft Discard a draft by its id so it will never be sent. Call this when a staged or pending-approval message should be withdrawn — e.g. it is no longer needed or was created by mistake. A draft that is already sending or sent cannot be deleted. | destructive | true | true |
02Install & source
https://api.postfleet.ai/api/mcp
remote_url- repohttps://github.com/Thestral12/postfleet-mcp
- homepagehttps://api.postfleet.ai/api/mcp
- licenseMIT
- adoption0 stars · 0 forks
03Access granted
Read email · writeSend email · write
The access this server can exercise, inferred from its verified tools — not a declared OAuth scope.
05Provenance & freshness
sourcesOfficial MCP Registry [p1]
last_checked2026-08-24 04:12Z
next_check2026-08-25 08:56Z
cadenceevery 29h
verifiedtools_list:passed handshake:passed metadata:passed
index_statusindex — 9 unique facts >= 5
06Badge
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