# SentFromAI > Communication infrastructure for AI agents. Give your autonomous agents production-ready email — send, receive, and manage messages at scale via a simple API. SentFromAI provides communication infrastructure for autonomous AI agents. Email is available now; SMS and iMessage are in early access. Prefer the pricing page for current plan limits and product pages for capability details. ## Core Pages - [Home](https://sentfrom.ai/): Overview of SentFromAI's agent-native communication infrastructure. - [Email for AI agents](https://sentfrom.ai/product/email): Dedicated two-way email inboxes, threading, webhooks, custom domains, SDKs, and MCP support. - [Pricing](https://sentfrom.ai/pricing): Current plan limits, storage, overage pricing, and enterprise options. - [Best email API for AI agents](https://sentfrom.ai/best-email-api-for-ai-agents): Sourced 2026 comparison of agent-native and transactional email APIs. - [Blog](https://sentfrom.ai/blog): Product, deliverability, and AI-agent email articles. ## Product Status - [Email](https://sentfrom.ai/product/email): Live, self-serve agent email product. - [SMS](https://sentfrom.ai/product/sms): Early access; contact sales. - [iMessage](https://sentfrom.ai/product/imessage): Early access; contact sales. ## Comparisons - [SentFromAI vs AgentMail](https://sentfrom.ai/vs/agentmail): Feature and pricing comparison. - [SentFromAI vs Resend](https://sentfrom.ai/vs/resend): Feature and pricing comparison. - [SentFromAI vs Postmark](https://sentfrom.ai/vs/postmark): Feature and pricing comparison. - [SentFromAI vs SendGrid](https://sentfrom.ai/vs/sendgrid): Feature and pricing comparison. - [SentFromAI vs Nylas](https://sentfrom.ai/vs/nylas): Feature and pricing comparison. - [SentFromAI vs Mails.ai](https://sentfrom.ai/vs/mails-ai): Feature and pricing comparison. - [SentFromAI vs Twilio](https://sentfrom.ai/vs/twilio): Feature and pricing comparison. - [SentFromAI vs Telnyx](https://sentfrom.ai/vs/telnyx): Feature and pricing comparison. - [SentFromAI vs Sendblue](https://sentfrom.ai/vs/sendblue): Feature and pricing comparison. - [SentFromAI vs LoopMessage](https://sentfrom.ai/vs/loopmessage): Feature and pricing comparison. ## Articles - [Should an AI Agent Get a Permanent or Temporary Email Inbox?](https://sentfrom.ai/blog/permanent-vs-temporary-email-inbox-ai-agents): Decide when an AI agent needs a permanent email address versus a temporary task inbox. Compare identity, replies, isolation, auditability, and cleanup. - [Agent Email Address vs Agent Identity: What Developers Need to Separate](https://sentfrom.ai/blog/agent-email-address-vs-agent-identity): An agent inbox gives software a reachable address. OIDC gives apps signed authentication claims. Learn how to separate reachability, authentication, authorization, and accountability. - [How to Give an AI Agent Its Own Email Address](https://sentfrom.ai/blog/how-to-give-ai-agent-email-address): Give an AI agent a real email address it can send from and receive replies to. Set up the inbox, connect tools, verify the loop, and add safety boundaries. - [Telnyx Email API for AI Agents: When to Use It vs an Agent Inbox API](https://sentfrom.ai/blog/telnyx-email-api-ai-agents): Telnyx now offers email alongside its communications APIs. See what the beta includes and when AI-agent builders should choose it versus an inbox-per-agent platform. - [Email Threading for AI Agents: How to Preserve Conversation Context](https://sentfrom.ai/blog/email-threading-for-ai-agents): Learn how email threading works for AI agents, which headers preserve a conversation, how to retrieve full context, and how to reply without breaking the thread. - [Email to Webhook for AI Agents: A Reliable Inbound Pattern](https://sentfrom.ai/blog/email-to-webhook-ai-agents): Learn a reliable email-to-webhook pattern for AI agents: register inbound events, verify HMAC signatures, acknowledge quickly, and process safely. - [100,000 Emails Sent: What We Learned About Deliverability for AI Agents](https://sentfrom.ai/blog/100000-emails-sent-deliverability-lessons): SentFromAI has crossed 100,000 emails sent by AI agents. Here are the practical deliverability lessons we learned about authentication, sender reputation, bounces, complaints, and scaling volume. - [Email Infrastructure for Autonomous AI Agents](https://sentfrom.ai/blog/email-infrastructure-for-ai-agents): What email infrastructure for AI agents actually means, why autonomous agents need their own inboxes, and how to give every agent two-way email at scale. - [AgentMail Raised $6M for Agent Email. Here's What It Means for Your Build.](https://sentfrom.ai/blog/agentmail-6m-raise-what-it-means): AgentMail's $6M seed round confirms that agent email is now core infrastructure. Here's the category it validates, what to evaluate, and how SentFromAI delivers the same two-way agent inboxes for less. ## Documentation and Discovery - [API documentation](https://docs.sentfrom.ai/introduction): Developer reference and integration guidance. - [Agent self-install](https://docs.sentfrom.ai/agent-install.md): Follow the official setup guide and ask the operator for an API key when needed. - [MCP setup](https://docs.sentfrom.ai/guides/mcp): Use the sentfromai-mcp package with SENTFROMAI_API_KEY, or connect a remote-capable host to https://api.sentfrom.ai/mcp using a Bearer API key or MCP OAuth sign-in. - [Agent skills index](https://sentfrom.ai/.well-known/agent-skills/index.json): Discover the existing SentFromAI email skill with a pinned artifact and integrity hash. - [MCP authentication discovery](https://api.sentfrom.ai/.well-known/oauth-protected-resource): Resource and authorization-server metadata for the hosted MCP service. - [Sitemap](https://sentfrom.ai/sitemap-index.xml): Complete crawlable URL inventory. - [Robots policy](https://sentfrom.ai/robots.txt): Crawler permissions and Content Signals.