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AgentMail Promo code
Real email inboxes for AI agents
AgentMail is an email inbox API built for AI agents, allowing you to create, manage, and operate real email accounts through a simple REST API with support for sending, receiving, search, attachments, and automation workflows.
AgentMail
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Save up to $720
30% off Developer or Startup plans for 12 months
Eligibility questions
All the applications are manually approved by our Customer Success Team. If you have questions about our application process, please send us an e-mail at applications@joinsecret.com.
This deal can be used if you have not signed up for AgentMail yet or if you're using it on the free version.
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AgentMail Promo Code: 30% off Developer or Startup plans for 12 months
We've partnered with AgentMail to offer you an exclusive 30% discount on Developer or Startup plans for 12 months, saving you up to $720. AgentMail gives every AI agent its own email inbox, letting your agent send, receive, thread, and reply to emails autonomously, with APIs for creating inboxes and configuring domains, email parsing and threading, text extraction from attachments, real-time webhooks and websockets, and semantic search across inboxes. Whether you're building a single agent or scaling a multi-agent product, this deal gives you a cost-effective way to get started. Below, we cover everything you need to know about eligibility, redemption, and savings.
How can I redeem this AgentMail promo code?
To redeem this AgentMail promo code, click "Get deal" on our offer page to unlock the code and apply it at checkout when signing up for the Developer or Startup plan.
Who is eligible for this AgentMail discount?
This AgentMail discount is available to new customers and anyone currently on AgentMail's free tier. If you already have a paid AgentMail subscription, this offer will not apply.
Why should I take advantage of this AgentMail promotion?
This AgentMail promotion is a strong opportunity if you're building AI agents that need to communicate over email. The Developer tier removes the daily sending limit and adds custom domain support, while the Startup plan is suited to teams deploying agents at greater scale. Getting 30% off for a full year gives you meaningful runway to build and test without the full cost kicking in.
30% off Developer or Startup plans for 12 months
Eligibility questions
All the applications are manually approved by our Customer Success Team. If you have questions about our application process, please send us an e-mail at applications@joinsecret.com.
General information
AgentMail is an email inbox API created specifically for AI agents and autonomous systems. As agents become capable of handling more business processes, customer interactions, and operational tasks, they increasingly need a reliable way to communicate through email. AgentMail provides that capability through a developer-friendly API that makes inbox creation and management straightforward.
With AgentMail, you can provision real email inboxes programmatically and give agents the ability to send, receive, organize, and respond to messages. Each inbox behaves like a standard email account while remaining fully accessible through API calls. Agents can work with attachments, manage email threads, process incoming messages, and react to events in real time.
The platform also includes features that go beyond traditional email infrastructure. Semantic search helps agents locate relevant messages based on meaning and context, while built-in data extraction tools make it easier to convert email content into structured information that can be used in downstream workflows.
AgentMail supports Python, TypeScript, CLI, and cURL, making integration relatively simple across modern AI development environments. Compatibility with MCP further expands its usefulness for teams building agentic products and automation platforms.
Custom domain support allows you to deploy branded inboxes for agents, while real-time event streaming enables fast responses to incoming communications without relying on constant polling.
For teams building AI agents that need genuine two-way communication with customers, vendors, partners, or internal stakeholders, AgentMail provides a dedicated email infrastructure layer designed around autonomous workflows. Check out the latest offers and deals available on our marketplace to get started!
Expert review on AgentMail
I used to think email inboxes were just for humans. Now we're building software that gives email addresses to AI agents. Somewhere, an out-of-office reply is probably being read by another robot 🤖
What is AgentMail?
AgentMail is an email inbox API built for AI agents. It allows developers to create, manage, and operate real email accounts programmatically, giving autonomous systems the ability to send, receive, search, and process emails through a developer-friendly platform 📧
Our opinion about AgentMail:
AgentMail fills a growing need in the AI ecosystem by giving autonomous agents genuine email capabilities. AI startups, automation platforms, SaaS companies, and enterprise development teams can use it to streamline communication workflows without building email infrastructure from scratch 🚀
AgentMail Pricing:
AgentMail offers pricing aimed at developers and businesses building production-ready AI workflows. The structure is generally better suited to growing teams and higher-volume deployments than occasional experimental projects 💰
Best AgentMail alternatives:
Alternatives include SendGrid, Mailgun, and Postmark. Compare features, pricing, and integrations, then discover exclusive offers for these tools and many others on our platform 🎉
Customer Success Manager
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Frequently Asked Questions about AgentMail's promo
Can existing AgentMail customers benefit from this offer?
This offer is available to new customers and free tier users only. Existing paid subscribers are not eligible for this discount.
What are the guarantees of this AgentMail offer?
This offer is presented as a defined partner promotion: 30% off Developer or Startup plans for 12 months, saving up to $720. Always confirm that the discount has been applied before completing your purchase.
How much can I save with this AgentMail promo code?
With this AgentMail promo code, you save 30% for 12 months. The Developer plan is $20 per month and the Startup plan is $200 per month, so savings range depending on which plan you choose, up to $720 over the year.
How will I know if I am approved for this AgentMail deal?
Once you apply the promo code at checkout and your reduced price is confirmed, your discounted plan will be active. No separate approval process is required.
AgentMail features
Give your AI agents real inboxes they can actively manage.
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Inboxes API
AgentMail allows you to create and manage fully functional email inboxes through API requests, making it easy to provision dedicated email accounts for AI agents without manual setup or administration.
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Thread and reply management
Agents can track complete conversations across multiple messages, preserving context and enabling more accurate responses when interacting with your customers, vendors, or other stakeholders over email.
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Attachment support
AgentMail enables agents to send, receive, download, and process email attachments, helping automate workflows that involve contracts, reports, invoices, documents, or other file-based communications.
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Real-time event streaming
Incoming email activity can trigger real-time events, allowing your agents to react immediately to new messages and reducing delays associated with traditional polling-based email integrations.
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Custom domain inboxes
You can create agent inboxes using your own domains, helping maintain consistent branding and providing a more professional communication experience for external recipients.
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Semantic search
Agents can search email content using meaning and context rather than exact keyword matches, making it easier to locate important information across large inboxes and lengthy conversations.
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Data extraction capabilities
Built-in extraction features help your agents convert email content into structured data, reducing the amount of custom parsing logic required within automation pipelines and workflows.
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SDK and MCP support
Official SDKs for Python and TypeScript, combined with MCP compatibility, help you integrate AgentMail into existing AI systems without significant implementation complexity.
AgentMail Reviews
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Tatum Coffey
Saved us weeks of infrastructure work
I was building an AI agent that needed to communicate with customers by email, and setting up traditional email infrastructure quickly became a distraction. With AgentMail, I was able to create inboxes programmatically and get everything working in a fraction of the time.
June 5, 2026
AgentMail: Pros and Cons
Pros
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Built specifically for AI agents: AgentMail focuses on agent workflows from the ground up
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Comprehensive inbox functionality: The platform supports both sending and receiving email, thread management, attachments, search, and event handling
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Flexible integration options: Support for Python, TypeScript, CLI tools, cURL, and MCP allows you to integrate AgentMail into a variety of AI environments
Cons
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Limited ecosystem resources: AgentMail currently has fewer community tutorials, integrations, and third-party resources available
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Early-stage platform: AgentMail is still a relatively young company
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Specialized audience: The product is designed primarily for AI agent developers
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