# Sendmux 依據 OpenAITools.app 於 2026-11-11 查驗的觀測資料，Sendmux（sendmux.ai）是收錄於 AI 開發者工具（全球排名第 207 名）的 AI 平台，每月產生 37 次造訪，月流量變化量為 -2196（-98.3%）。其主要地理市場為美國（流量佔比 100%），並採用免費定價模式。依每月流量計算的主要競爭替代方案包括 Morph（每月 30.7萬次造訪），Carly AI（每月 34萬次造訪），Respan（每月 9.15萬次造訪）。 Sendmux is an email API built for AI agents. It gives each agent a real mailbox on a verified domain or a shared address, lets it send outbound mail through your own providers, and streams inbox events live so agents can react instead of polling. ## 主要觀測資料與規格 | 指標 | 數值 | | :--- | :--- | | 工具名稱 | Sendmux | | 代稱 | sendmux | | Status | active | | Origin | independent | | Maintenance | active | | 官方網域 | sendmux.ai | | 網站網址 | https://sendmux.ai | | 分類 | AI 開發者工具, AI Workflow, AI 郵件助手 | | 定價模式 | 免費 | | 每月造訪次數 | 37 | | 月流量變化 | -2,196 | | 月成長率 | -98.3% | | 主要市場 | 美國 | | 市佔率 | 100% | | 直接造訪 | 12 | | 自然搜尋造訪 | — | | 社群造訪 | — | | 推薦流量造訪 | 5 | | 電子郵件造訪 | 2 | | 評論分數 | 4.2 | | 收藏數 | 0 | | 支援平台 | 網站 | | 帳務平台 | | | 屬性 | 功能: 網站; 價格: 免費 | | 標籤 | 電子郵件信箱 API, AI 智慧代理, AI 電子郵件助理, AI 開發者工具, 智慧代理信箱, 電子郵件 API, SMTP API, MCP, Webhooks, SSE, SDK, CLI, Gmail, Outlook, Amazon SES, 電子郵件自動化 | ## 總覽 Sendmux is an email API built for AI agents. It gives each agent a real mailbox on a verified domain or a shared address, lets it send outbound mail through your own providers, and streams inbox events live so agents can react instead of polling. ## 價格與方案 Sendmux is listed as free, with two free mailboxes available to start and agent onboarding designed to be self-service. Pricing beyond the initial free mailboxes is not detailed on the landing page, so check the pricing page for current tiers. ## 關鍵功能與能力 - **Agent mailboxes:** Provision mailboxes on verified domains or a shared myagent.mx address, with clean JSON output that strips signatures and quotes. - **Provider-flexible sending:** Send over HTTP or SMTP using the same mailbox credential as a Bearer token and SMTP password, with Idempotency-Key retries and attachment support. - **Routing controls:** Bind keys to providers, delivery groups, weights, and quota windows so traffic stays inside the boundaries you set. - **Real-time events:** Signed webhooks for delivery and receipt events, an SSE stream for live mailbox clients, and typed change polling for resync. - **Developer tooling:** Official SDKs for TypeScript and Python, a CLI, LangChain and AI SDK integrations, and a hosted MCP endpoint with OAuth. ## 主要使用情境 - **Triage an inbound support inbox (Support automation):** Give a support or triage agent its own mailbox, feed it stripped-down message content, and let it reply through the same API. - **Wire transactional email into an app (Product engineers):** Send transactional mail from an agent over HTTP with idempotency keys, and receive bounce or reply events via webhooks. - **Spread delivery across providers (Platform teams):** Route sends across multiple providers with weights and quotas so no single account carries all the volume or risk. ## 優勢 - One API for sending, receiving, routing, and events - Inbox payloads tuned for LLM token efficiency - Not locked to a single sending provider - Practical developer tooling: SDKs, CLI, MCP, framework integrations ## 限制 - Newer platform, so the surrounding ecosystem and community material are still small - Using your own sending providers puts deliverability and domain reputation on you - Agent mailboxes still depend on correct DNS setup for verified domains ## 常見問題 ### What exactly does an agent mailbox mean? Sendmux provides agent-shaped mailboxes. You can create mailboxes on a verified domain you own or on a shared myagent.mx address, and the agent can both send from and receive at that mailbox. ### How does Sendmux reduce token costs for agents? When your agent reads a message, Sendmux can strip signatures and quoted history by default, with links, headers, and attachment metadata available on request. That keeps token usage down and gives the model actionable content instead of raw HTML. ### Can I route across multiple email providers? Yes. Bind a mailbox key to all of your active providers, to selected providers, or to delivery groups, with percentage weights and second/minute/hour/day quota windows controlling how traffic is distributed. ### Is Sendmux free to try? Two free mailboxes are offered to start. The site is designed for agents to self-onboard: point an agent at the auth instructions or install the Sendmux skills, then connect via MCP or a scoped API key. ### Sendmux 的每月流量與成長趨勢為何？ Sendmux 目前每月有 37 次造訪，月流量變化為 -2196（成長率 -98.3%）。其主要來源市場為美國（佔比 100%），其中包含每月 12 次直接造訪與每月 — 次自然搜尋造訪。 ### Sendmux 是免費的嗎？其定價模式為何？ Sendmux 採用免費定價模式。Sendmux is listed as free, with two free mailboxes available to start and agent onboarding designed to be self-service. Pricing beyond the initial free mailboxes is not detailed on the landing page, so check the pricing page for current tiers. 支援的帳務與結帳平台包括：未列出。 ### 2026 年最佳的 Sendmux 替代方案有哪些？ 依據 OpenAITools.app 的分類流量與功能契合度，Sendmux 的前五大替代方案為：1. Morph（每月 30.7萬次造訪）; 2. Carly AI（每月 34萬次造訪）; 3. Respan（每月 9.15萬次造訪）; 4. Portkey（每月 19.57萬次造訪）; 5. Merge（每月 31.32萬次造訪）。 ### Sendmux 支援哪些平台與核心 AI 能力？ Sendmux 分類於 AI 開發者工具, AI Workflow, AI 郵件助手，支援以下平台：網站，其核心能力標籤包括：電子郵件信箱 API, AI 智慧代理, AI 電子郵件助理, AI 開發者工具, 智慧代理信箱, 電子郵件 API。 ## 替代方案 | 工具名稱 | 每月造訪次數 | 定價模式 | 比較 | | :--- | :--- | :--- | :--- | | [Morph](https://openaitools.app/tw/tool/morph-apply-ai-edits-to-files-fast) | 306,961 | 免費試用、需聯絡報價 | [比較](https://openaitools.app/tw/compare/morph-apply-ai-edits-to-files-fast-vs-sendmux) | | [Carly AI](https://openaitools.app/tw/tool/carly-ai) | 340,001 | 免費增值 | [比較](https://openaitools.app/tw/compare/carly-ai-vs-sendmux) | | [Respan](https://openaitools.app/tw/tool/respan) | 91,503 | 免費增值 | [比較](https://openaitools.app/tw/compare/respan-vs-sendmux) | | [Portkey](https://openaitools.app/tw/tool/portkey-ai) | 195,650 | 免費增值、付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/portkey-ai-vs-sendmux) | | [Merge](https://openaitools.app/tw/tool/merge-dev) | 313,201 | 免費增值、需聯絡報價 | [比較](https://openaitools.app/tw/compare/merge-dev-vs-sendmux) | | [DogeSMS](https://openaitools.app/tw/tool/dogesms) | 96,418 | Pay-as-you-go | [比較](https://openaitools.app/tw/compare/dogesms-vs-sendmux) | | [Missive](https://openaitools.app/tw/tool/missive) | 631,353 | 免費試用、付費 | [比較](https://openaitools.app/tw/compare/missive-vs-sendmux) | | [Pipedream](https://openaitools.app/tw/tool/pipedream) | 312,216 | 免費增值、付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/pipedream-vs-sendmux) | | [AutoSend](https://openaitools.app/tw/tool/autosend) | 12,928 | 付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/autosend-vs-sendmux) | | [iGPT](https://openaitools.app/tw/tool/igpt-1) | 5,904 | 需聯絡報價 | [比較](https://openaitools.app/tw/compare/igpt-1-vs-sendmux) | | [RightNow Inference（RunInfra）](https://openaitools.app/tw/tool/runinfra) | 18,110 | 免費試用、付費、需聯絡報價 | [比較](https://openaitools.app/tw/compare/runinfra-vs-sendmux) | | [BeatAPI](https://openaitools.app/tw/tool/beatapi-ai-model-data-web-apis-for-agents) | 99,987 | 免費增值 | [比較](https://openaitools.app/tw/compare/beatapi-ai-model-data-web-apis-for-agents-vs-sendmux) | --- 來源：https://openaitools.app/tw/tool/sendmux