agentmail

Give AI agents their own email inboxes using the AgentMail API. Use when building email agents, sending/receiving emails programmatically, managing inboxes, handling attachments, organizing with labels, creating drafts for human approval, or setting up real-time notifications via webhooks/websockets. Supports multi-tenant isolation with pods.

18stars6forksUpdated 6/19/2026

Data Science & ML API Development Web Development Productivity & Workflow #api #ai-agents #typescript #email #python #automation

Security Assessment

Medium Risk(60/100)

Detected risks:

Secret Exposure([references/webhooks.md] api_key=, [references/websockets.md] api_key=, [SKILL.md] api_key=)

Sensitive File Access([references/websockets.md] .env)

Security Score60/100

About agentmail

AgentMail is an API-first email platform designed specifically for AI agents, providing programmatic email capabilities through a developer-friendly SDK. It solves the challenge of giving AI agents their own email identities and the ability to autonomously send, receive, and manage email communications. Instead of building complex email infrastructure from scratch, developers can quickly provision email inboxes for their AI agents and integrate email functionality into their applications with just a few lines of code.

The platform provides comprehensive email management features including scalable on-demand inbox creation with auto-generated or custom email addresses, full message lifecycle management with sending and replying capabilities, thread-based conversation grouping, label-based organization, and attachment handling. It supports both plain text and HTML email formats for optimal deliverability, and includes real-time notification capabilities through webhooks and websockets. The SDK is available for both TypeScript/Node.js and Python environments, offering consistent APIs across both languages.

AgentMail is ideal for developers building AI-powered email agents, customer support automation systems, outreach and communication tools, or any application requiring programmatic email capabilities. It supports multi-tenant architectures with pod-based isolation, making it suitable for SaaS applications where multiple agents or customers need separate email environments. Whether you're building an AI assistant that needs to monitor an inbox, an automated follow-up system, or a draft approval workflow where AI prepares emails for human review, AgentMail provides the infrastructure and APIs to handle these use cases efficiently.

FAQ

What programming languages does AgentMail support?

AgentMail provides official SDK support for TypeScript/Node.js and Python. Both SDKs offer the same core functionality for managing inboxes, sending and receiving messages, organizing with labels, and handling threads.

Can I use custom email domains with AgentMail?

Yes, you can create inboxes with custom usernames and domains when creating an inbox. If you don't specify custom parameters, AgentMail will auto-generate an email address for you using the default agentmail.to domain.

How does AgentMail organize email conversations?

AgentMail uses threads to group related messages in a conversation, similar to how modern email clients work. You can list threads, filter them by labels, and retrieve all messages within a thread. Additionally, you can organize messages using custom labels for flexible categorization.

Do I need to send both plain text and HTML versions of emails?

Yes, AgentMail recommends always sending both text and html versions of your messages for best deliverability. This ensures compatibility across different email clients and improves the chances of your emails being delivered successfully.

Does AgentMail support real-time notifications?

Yes, AgentMail supports real-time notifications through webhooks and websockets, allowing your application to be notified immediately when new messages arrive or other events occur in your agent's inbox.