Bring Transactional Email
to OpenAI Agents SDK
Create your Vinkius account to connect Resend Alternative to OpenAI Agents SDK and start using all 14 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Resend Alternative MCP Server?
Connect your Resend account to any AI agent and take full control of your email infrastructure through natural conversation.
What you can do
- Email Sending — Send transactional emails with HTML/text bodies, attachments, CC/BCC and reply-to addresses
- Batch Sending — Send up to 100 emails in a single API call for bulk notifications
- Email Tracking — Retrieve sent email details including delivery status, bounces and complaints
- Domain Management — Add, verify, update and delete sending domains with DNS record guidance
- API Key Management — Create, list and delete API keys with scoped permissions (full_access, sending, domains)
- Scheduled Emails — Update or cancel previously scheduled email deliveries
How it works
- Subscribe to this server
- Enter your Resend API Key
- Start sending emails from Claude, Cursor, or any MCP-compatible client
No more switching to the Resend dashboard to check delivery status or add a new domain. Your AI acts as a dedicated email operations engineer.
Who is this for?
- Developers — quickly send transactional emails, check delivery status and manage domains without leaving your IDE
- DevOps Engineers — audit sent email logs, verify domain DNS records and manage API key permissions
- Product Teams — send batch notifications, review delivery metrics and manage email templates via conversation
Built-in capabilities (14)
The email must be in "scheduled" status. Provide the email ID. Cancel a scheduled email
Requires a name and optionally the permission scope (full_access, sending, domains). Returns the key value which is shown ONLY ONCE — make sure to copy it immediately. Create a new API key in Resend
Requires the domain name (e.g. "example.com"). Optionally set the AWS SES region. Returns the domain ID and the DNS records (SPF, DKIM) you need to configure for verification. Add a new domain to Resend
The key will no longer be able to authenticate API requests. Provide the API key ID from list_api_keys. WARNING: this action is irreversible. Delete an API key from Resend
All DNS records associated with the domain will be invalidated. Provide the domain ID. WARNING: this action is irreversible. Delete a domain from Resend
Provide the domain ID from list_domains. Get details for a specific domain
Returns the sender, recipient(s), subject, creation date, last event (delivered, bounced, complained) and scheduled_at if applicable. Get details for a sent email
Returns key name, ID, creation date and permission scope (full_access, sending, domains). Note: actual key values are NOT returned for security. List API keys in your Resend account
Each domain shows its name, status (verified, not_verified, pending), region, SPF/DKIM records and creation date. Use this to verify which domains are ready for sending emails. List verified domains in Resend
Returns email ID, from, to, subject, creation date and last event status. Results are paginated and ordered by most recent first. List recently sent emails
Provide a JSON array of email objects, each with from, to, subject and optionally html/text. Each email in the batch is counted individually against your quota. Returns an array of results with IDs for each email. Send a batch of emails via Resend
Requires the sender address (from), recipient(s) (to) and subject. Optionally provide HTML body, plain text body, reply-to address, CC/BCC recipients and attachments. The from address must use a verified domain configured in Resend. Returns the email ID for tracking. Send an email via Resend
The email must be in "scheduled" status. Provide the email ID and the new scheduled_at timestamp (ISO 8601). Update a scheduled email
Use this after adding or updating SPF/DKIM records in your DNS provider. Returns the updated domain status. Verify a domain's DNS records
Why OpenAI Agents SDK?
The OpenAI Agents SDK auto-discovers all 14 tools from Resend Alternative through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Resend Alternative, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
- —
Native MCP integration via
MCPServerSse, pass the URL and the SDK auto-discovers all tools with full type safety - —
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
- —
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
- —
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
Resend Alternative in OpenAI Agents SDK
Why run Resend Alternative with Vinkius?
The Resend Alternative connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 14 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Resend Alternative using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Resend Alternative and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Resend Alternative to OpenAI Agents SDK through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Resend Alternative for OpenAI Agents SDK
Every request between OpenAI Agents SDK and Resend Alternative is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
How do I create a Resend API Key?
Log in to the Resend Dashboard, go to Settings > API Keys, click Create API Key, select the permission scope (Full Access, Sending, or Domains), give it a name and copy the key immediately — it starts with re_ and won't be shown again.
Can I send HTML emails with attachments?
Yes! Use the send_email tool with the html parameter for HTML body content and optionally include attachments. You can also provide a text fallback for email clients that don't render HTML. Attachments are passed as objects with filename, content (base64) and content_type.
How do I verify a domain for sending?
Use create_domain with your domain name (e.g. "example.com"). Resend will return the SPF and DKIM DNS records you need to add to your DNS provider. After adding the records, use verify_domain with the domain ID to trigger re-verification. The domain status will change to "verified" once DNS propagation is complete.
What are the API rate limits?
Resend allows 5 requests per second per team, shared across all API keys. If you exceed this limit, you'll receive a 429 response. Rate limits can be increased by contacting Resend support for verified senders.
How does the OpenAI Agents SDK connect to MCP?
Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.
Can I use multiple MCP servers in one agent?
Yes. Pass a list of MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.
Does the SDK support streaming responses?
Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.
MCPServerStreamableHttp not found
Ensure you have the latest version: pip install --upgrade openai-agents
Agent not calling tools
Make sure your prompt explicitly references the task the tools can help with.
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