MailerSend MCP. Automate email sends and manage domains.
MailerSend lets your agent send transactional emails and manage sender domains directly through natural language prompts. It handles both single sends and large batches of emails up to 500 recipients at a time. Use it to check domain verification status, track real-time email activity logs, or query recipient details from your account database.
Give Claude and any AI agent real-world access
Your agent sends transactional messages, supporting both single recipients and batches of up to 500 people.
You list all associated sending domains, check their DNS settings, and trigger ownership verification checks.
The MCP provides real-time logs of email events like opens, clicks, and deliveries for any domain.
Your agent retrieves full metadata, including the entire lifecycle history for individual sent messages or lists all past sends.
You list and pull specific data about recipients directly from your linked account database.
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What AI agents can do with MailerSend: 10 Tools for Email & Domain Ops
These tools let your agent send emails in batches, check domain status, list contacts, and pull detailed reports on sent messages.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using MailerSend MCPGet Sender Domain Details
Pulls specific technical details about a single sender domain you own.
Get Sent Message Details
Retrieves the complete history and metadata for one particular sent email.
Get Recipient Details
Gets specific data points about a single recipient from your linked database.
List Domain Activity
Compiles all email activity, including opens and clicks, for an entire domain ID.
List Sender Domains
Shows a comprehensive list of all domains you have registered with MailerSend.
List Sent Messages
Generates a full catalog listing every email message that has been sent through your account.
List Email Recipients
Retrieves the entire list of contact records currently stored in your account database.
Send Bulk Transactional Emails
Sends multiple transactional emails at once, processing them as a single batch...
Send Transactional Email
Sends one individual email using specified sender, recipient, and content or...
Verify Sender Domain
Initiates a DNS verification check to confirm ownership of a sending domain.
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with MailerSend, then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by MailerSend. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
VINKIUS CLOUD
Cloud Hosted
Managed infra
V8 Isolated
Sandboxed per request
Zero-Trust Proxy
No stored credentials
DLP Enforced
Policy on each call
GDPR Compliant
EU data residency
Token Compression
~60% cost reduction
Tracking email performance requires jumping between five different dashboards.
Today, confirming a campaign's health means opening the sender domain dashboard to check verification status. Then you switch over to the message history tab to see if individual emails were sent or bounced. Next, you jump to the activity log just to see opens and clicks. You then have to go back and manually list recipients to ensure they are still active.
With this MCP, your agent pulls all that data into one flow. Instead of clicking through five tabs, you simply ask the agent to 'Show me domain activity for X.' It aggregates the sender details, message metadata, and delivery logs instantly.
MailerSend MCP: Sending Bulk Emails and Managing Domains
The manual steps that disappear are checking DNS records in a separate platform, copying list IDs from one page to another for bulk sends, and cross-referencing bounce lists. You don't have to keep five browser tabs open.
Now you use send_bulk_transactional_emails or the verify_sender_domain tool. Your agent handles the complex API calls in the background; you just get the clear answer.
What MailerSend MCP does for your AI
This MCP connects your agent to the MailerSend API, giving you control over transactional messaging and domain health without touching a dashboard. You can automate everything from sending single emails using templates to running massive batch operations for high-volume campaigns. It gives you visibility into email delivery performance by listing all sender domains and triggering ownership verification checks when needed.
Need to know who opened an email or if it bounced? Your agent pulls real-time logs, letting you access event activity for any domain or retrieve complete metadata on a specific sent message. Plus, you can query your account database using list_email_recipients to ensure your campaign lists are always accurate.
All this goes through your AI client and is available via the Vinkius Catalog.
019d75cc-93b7-7387-985d-d1d8a2d5edce How to set up MailerSend MCP
The bottom line is that you manage complex email workflows using simple natural language instructions from any compatible client.
Subscribe to the MailerSend MCP and input your API token into Vinkius.
Your agent reads the prompt (e.g., 'Check domain activity for X') and determines which tool is needed.
The MCP executes the request, returning structured data about domains, sent messages, or recipient lists directly to your AI client.
Who uses MailerSend MCP
This MCP is for Ops Engineers and Marketing Automation Specialists who get bogged down manually cross-referencing dashboards to confirm a campaign's domain status or delivery performance. It’s built for the person who needs reliable, programmatic insight into email flows.
They use it to verify sender domain ownership and query recipient lists before a large campaign launch.
They test email delivery logic by sending single or bulk transactional emails directly from their development environment.
They monitor performance by listing domain activity and retrieving detailed metadata for past message sends.
Benefits of connecting MailerSend MCP
Confirm Domain Ownership: Instead of manually navigating DNS records, you run the verify_sender_domain tool to instantly trigger ownership checks for your sending domain.
High-Volume Sending: You can process thousands of contacts quickly by using send_bulk_transactional_emails, eliminating the need for manual API calls per recipient.
Full Audit Trail: When a campaign goes sideways, you don't guess. Use list_domain_activity to pull real-time logs and see exactly when opens or clicks happened.
Data Synchronization: You can use list_email_recipients to ensure your mailing list is always accurate by pulling the most current contact records before sending anything.
Deep Message Insight: To troubleshoot a specific email, you run get_sent_message_details. This pulls every piece of metadata about that one message's lifecycle.
MailerSend MCP use cases
Checking Compliance Before Launch
The ops engineer needs to launch a marketing campaign but isn't sure if their new sender domain is fully verified. They prompt the agent: 'Check my domain status.' The agent runs verify_sender_domain and reports back on the current DNS requirements, stopping potential delivery issues before they start.
Handling Large User Onboarding
The development team needs to notify 500 users immediately upon sign-up. Instead of writing a complex loop, they instruct their agent to 'Send welcome emails to the entire user list.' The agent uses send_bulk_transactional_emails, completing the task in one go.
Investigating Delivery Failures
A client complains that some recipients didn't get an email. They ask the agent to 'Show all activity for last week.' The agent runs list_domain_activity, quickly pinpointing which specific domain ID had delivery failures and why.
Auditing Campaign Performance
The marketing analyst needs proof of campaign success. They prompt: 'Find the activity for messages sent last month.' The agent runs list_sent_messages, allowing the analyst to get_recipient_details and build a complete performance report.
MailerSend MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Treating emails like simple text files
A user attempts to send an email by just pasting raw HTML code into the prompt, hoping it will work. They forget that templates or specific sender details are required.
You must use the send_transactional_email tool and provide a JSON body with all necessary elements: the sender address, recipient list, and either text content or a pre-defined template ID.
Forgetting domain checks
A developer sends emails from a new domain without running any verification. The messages fail to deliver because the sending domain hasn't been properly authenticated.
Always run verify_sender_domain before major campaigns, and use list_sender_domains first to ensure you are targeting the correct account.
Listing contacts manually
A user copies a small handful of names from a spreadsheet into the prompt instead of pulling the full contact record.
Use list_email_recipients to query your entire database, and then use get_recipient_details to pull specific data points for targeted campaigns.
When to use MailerSend MCP
Use this MCP if your core problem revolves around email delivery reliability and domain governance. Specifically, you need to perform batch actions (sending up to 500 emails) or audit sender health by checking DNS records using verify_sender_domain. This is for operations that require programmatic visibility into message lifecycles.
Don't use this if your primary goal is simply drafting content or managing internal team communication; those tools are better suited. If you just need a simple contact list without sending capability, general CRM APIs might be enough. But if the task involves 'sending,' 'domain ownership,' or 'activity logging,' this MCP is mandatory.
Frequently asked questions about MailerSend MCP
How do I check if my sending domain is authorized using MailerSend MCP? +
Run verify_sender_domain. This tool triggers a DNS verification check, confirming ownership status and letting you know what records are needed to get started.
Can I send emails to more than 500 people with MailerSend MCP? +
No, the current bulk sending limit is 500 recipients per single batch request. If you have thousands of contacts, your workflow needs to be segmented into multiple batches.
What information does list_domain_activity provide about my emails? +
It provides real-time logs detailing every email event for a domain ID, including when it was opened, clicked, or delivered. This is crucial for performance auditing.
How do I find out why an individual message failed to send using MailerSend MCP? +
Use get_sent_message_details. This tool fetches the complete metadata and lifecycle history for that specific message, pinpointing exactly where the failure occurred.
Does list_email_recipients pull all my contacts from the web? +
No, it queries only the contact records stored in your linked account database. It's a reliable way to ensure you are using up-to-date data for your campaigns.