Bring Transactional Email
to Mastra AI
Learn how to connect UniOne to Mastra AI and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the UniOne MCP Server?
Connect your UniOne email delivery account to any AI agent and simplify how you manage your transactional messaging, email templates, and delivery tracking through natural conversation.
What you can do
- Email Delivery — Send individual or bulk transactional emails with full HTML support and personalized sender details.
- Template Automation — List, create, and send emails using pre-defined templates for consistent branding.
- Event Monitoring — Configure webhooks and track delivery events (opened, clicked, delivered) in real-time.
- Reputation Management — List and manage suppressed email addresses (unsubscribes/bounces) to protect your sender score.
- Technical Control — Fetch detailed metadata for templates and webhooks directly from the agent.
How it works
1. Subscribe to this server
2. Enter your UniOne API Key and select your Region (eu1 or us1)
3. Start managing your transactional emails from Claude, Cursor, or any MCP client
Who is this for?
- Developers & DevOps — quickly test email sending and verify template rendering via simple AI commands.
- Marketing Operations — monitor email performance and manage suppression lists directly from the workspace.
- Product Teams — automate the creation of notification templates and track user engagement metrics.
Built-in capabilities (12)
Delete a template
Delete a webhook
Get template details
Get webhook details
List suppressed emails
List email templates
List webhooks
Send a transactional email
Send email using a template
Add email to suppression list
Create or update a template
Configure a webhook
Why Mastra AI?
Mastra's agent abstraction provides a clean separation between LLM logic and UniOne tool infrastructure. Connect 12 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
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Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add UniOne without touching business code
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Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
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TypeScript-native: full type inference for every UniOne tool response with IDE autocomplete and compile-time checks
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One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
UniOne in Mastra AI
UniOne and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect UniOne to Mastra AI through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for UniOne in Mastra AI
The UniOne MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 12 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Mastra AI only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
UniOne for Mastra AI
Every tool call from Mastra AI to the UniOne MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I send an email using an existing template ID?
Yes! Use the send_template tool. Provide the Template ID and an array of recipient objects (with their email addresses) to trigger the delivery instantly.
How do I see which email addresses have been suppressed?
Run the list_suppression query. The agent will retrieve a list of unsubscribed or bounced email addresses managed by your UniOne account.
Is it possible to update an email template via AI?
Absolutely. Use the set_template action. You can provide the ID, name, subject, and the new HTML body to save changes to your template library.
How does Mastra AI connect to MCP servers?
Create an MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.
Can Mastra agents use tools from multiple servers?
Yes. Pass multiple MCP clients to the agent constructor. Mastra merges all tool schemas and the agent can call any tool from any server.
Does Mastra support workflow orchestration?
Yes. Mastra has a built-in workflow engine that lets you chain MCP tool calls with branching logic, error handling, and parallel execution.
createMCPClient not exported
Install: npm install @mastra/mcp