MailerSend MCP. Send emails, verify domains, audit activity. No manual API calls needed.
Gemini Works with every AI agent you already use
…and any MCP-compatible client
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MailerSend MCP Server lets your AI agent handle transactional email sending and domain management. Send single or bulk emails using templates, check DNS records for sender domains, and track delivery logs—all via natural language commands.
This server exposes tools to list recipients, audit activity, verify ownership, and manage high-volume messaging.
What your AI agents can do
Get recipient details
Fetches the specific details for a single recipient address from your account database.
Get sender domain details
Retrieves detailed information about a specified sender domain, including its status.
Get sent message details
Gets the complete history and metadata for one individual email message you sent.
You trigger a DNS check to confirm domain ownership before sending any email.
Your agent sends one transactional email using a specific template or content body.
You send up to 500 emails in a single API batch call for high-volume communication.
Your agent retrieves detailed, time-stamped logs of email events (opens, clicks) tied to a specific sender domain.
You list and query recipients from your account database to verify contact details.
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MailerSend MCP Server: 10 Tools for Email Ops
Use these ten tools to manage email delivery, check domain compliance, list recipients, and track message activity directly through your AI agent.
019d75ccget recipient details
Fetches the specific details for a single recipient address from your account database.
019d75ccget sender domain details
Retrieves detailed information about a specified sender domain, including its status.
019d75ccget sent message details
Gets the complete history and metadata for one individual email message you sent.
019d75cclist domain activity
Lists all recorded email activity (opens, clicks) that occurred for a specific domain ID.
019d75cclist email recipients
Retrieves and lists every recipient stored in your entire account database.
019d75cclist sender domains
Lists all sender domains—both verified and unverified—associated with your account.
019d75cclist sent messages
Retrieves a list of metadata for all email messages you have sent through the service.
019d75ccsend bulk transactional emails
Sends multiple transactional emails together in one single batch request (up to 500).
019d75ccsend transactional email
sends a single, individual transactional email using specified content or template ID.
019d75ccverify sender domain
Initiates and checks the DNS verification status for a given domain name.
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 every 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 4,700+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 4,700+ others, all in one place
- Add new capabilities to your AI anytime you want
- Every connection is secured and compliant automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog every week
What you can do with this MCP connector
Your AI agent can handle all your high-volume email sending and domain management right through this server. You'll use it for everything from single outreach messages to massive batch campaigns.
Sending Emails & Campaigns
When you need to send mail, your agent uses the send_transactional_email tool to dispatch a single message. It can take specific content or reference an existing template ID, letting you control exactly what goes out. For big pushes, you'll use send_bulk_transactional_emails; this allows sending up to 500 transactional emails in one batch request.
This capability handles high-volume comms efficiently.
Managing Your Sender Identity
Before you send anything, your agent makes sure your domain is legit. You can start by listing all sender domains—both the verified and unverified ones—using list_sender_domains. To check a specific domain's status, the server lets you get detailed info via get_sender_domain_details. If you need to prove ownership, your agent triggers a DNS verification check using verify_sender_domain, giving you immediate confirmation of the domain's current status.
Auditing and Tracking Activity
Keeping track is crucial. You can get detailed logs of email events—opens and clicks—for any specific domain ID by calling list_domain_activity. For full message history, your agent first runs through list_sent_messages to get a list of metadata for every single message you've shot out. If you need the deep dive on just one message, get_sent_message_details pulls the complete history and metadata for that individual email.
This means you know who opened what and when.
Contact Management & Verification
When it comes to recipients, your agent gives you two ways to look at contacts. First, you can list every single recipient stored in your account database using list_email_recipients. If you need the specifics on just one address, get_recipient_details fetches those granular details for a single contact.
This server makes sure that whether it's verifying domain ownership, sending massive campaigns of 500 emails, or auditing click activity on a specific sender ID, your AI client can execute the steps using plain language commands. You tell it what to do; the agent handles the API calls and data retrieval.
How MailerSend MCP Works
- 1 Subscribe to the MailerSend MCP Server and input your API token into your preferred AI client.
- 2 Your agent identifies the required action (e.g., 'Check domain XYZ').
- 3 The agent calls the specific tool (like
verify_sender_domain), passes parameters, and reports the structured result back to you.
The bottom line is that your AI client speaks directly to MailerSend's API, handling authentication and data formatting for you.
Who Is MailerSend MCP For?
This server is built for technical roles who deal with high-volume, mission-critical email comms. If you're the developer needing to quickly verify domain compliance before a deployment, or the ops engineer constantly cross-referencing delivery logs across multiple dashboards—you need this. It cuts out the manual API calls.
They use verify_sender_domain to ensure new services meet compliance standards before going live.
They run send_bulk_transactional_emails and query list_email_recipients to manage campaign deployment lists.
They use get_sent_message_details in their IDE to debug failed sends or retrieve specific message metadata.
What Changes When You Connect
- High-Volume Reliability: Use
send_bulk_transactional_emailsto handle up to 500 messages in one go. This means you don't have to write complex loops in code just to send out a newsletter batch. - Immediate Compliance Checks: Run
verify_sender_domaininstantly. Before any major deployment, check if your sender domain passes DNS verification, minimizing bounce risk and ensuring deliverability. - Deep Activity Logging: Need to know who opened the email? Use
list_domain_activity. You get real-time logs of opens and clicks, tied directly to a specific domain ID—way better than checking a dashboard. - Debugging Made Easy: If an email fails or looks weird, use
get_sent_message_details. This tool pulls the full lifecycle history for that one message, letting you debug without wading through thousands of logs. - Data Preparation: Use
list_email_recipientsto quickly pull and vet your target list from your account database. Your agent handles iterating through those results so you don't have to.
Real-World Use Cases
Onboarding a New Feature
A developer has a new service that needs to send welcome emails but isn't sure if the domain is properly set up. Instead of manually checking DNS records, they ask their agent: 'Verify sender domain for corp-new.io.' The agent runs verify_sender_domain, confirms the status, and then uses send_transactional_email to dispatch the first test message.
Quarterly Newsletter Blast
The marketing team needs to send 450 update emails. They ask their agent: 'Send bulk transactional emails for the Q3 report.' The agent uses send_bulk_transactional_emails with a single template ID, ensuring all messages hit the recipients listed via list_email_recipients without writing any batch processing code.
Investigating a Bounce Spike
The ops team notices that emails to 'client@corp.com' are failing repeatedly. They ask their agent: 'Get the full activity log for domain ID 98765.' The agent uses list_domain_activity and then runs get_recipient_details on specific addresses to see if the contact info is actually correct.
Compliance Audit
A compliance officer needs proof that all outgoing communication domains are verified. They ask their agent: 'List all sender domains and check their status.' The agent runs list_sender_domains and then calls get_sender_domain_details on each one, generating a full audit report.
The Tradeoffs
Manual API Calls
Writing 20 lines of Python code just to check if the domain is valid before sending an email.
→
Just tell your agent: 'Before you send, run verify_sender_domain on this list.' The tool handles the conditional logic and error checking for you.
Single-Use Sends
Sending 50 emails one by one using a basic loop in an IDE.
→
If you have more than ten messages, use send_bulk_transactional_emails. It's designed to handle the volume efficiently and keeps your API calls clean.
Ignoring History
Sending emails without knowing if recipients actually open them or who is clicking on links.
→
Use list_domain_activity after a campaign runs. You get hard data (opens, clicks) that proves engagement and tells you what the message worked.
When It Fits, When It Doesn't
Use this server if your core problem involves managing high-volume email delivery or verifying sender identity. The tools are perfect for structured tasks: 'Get me a list' (list_email_recipients), 'Check status' (verify_sender_domain), or 'Send many things' (send_bulk_transactional_emails).
Don't use this if you just need to draft an email and send it via a simple chat bot, or if your process requires custom logic outside of the toolset (like integrating with a CRM that isn't MailerSend). For those cases, look for a direct messaging tool. This is specialized for structured mail operations only.
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.
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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 10 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Available Capabilities
Managing email campaigns shouldn't feel like wrestling with an API manual.
Today, setting up a simple campaign means jumping between the dashboard, writing custom scripts to pull recipient lists, and then calling multiple endpoints just to verify that your sending domain is actually clean. You spend more time managing the process than crafting the message itself.
With this MCP server, you simply tell your agent: 'Send a bulk email using template X.' The agent handles listing recipients via `list_email_recipients`, verifying the sender with `verify_sender_domain`, and running the entire batch through `send_bulk_transactional_emails`. You get the confirmation; it just works.
MailerSend MCP Server: Sending emails, managing domains, auditing activity.
The biggest manual step that disappears is the constant cross-checking. Instead of manually querying `get_sender_domain_details` to ensure compliance before going live, your agent handles it in one step, giving you instant confidence that the domain is ready for scale.
This isn't just about sending; it’s about accountability. You can now ask your agent to 'Show me all open events for this domain,' using `list_domain_activity`, and get a clean, actionable report without ever touching the underlying API calls.
Common Questions About MailerSend MCP
How do I check if my sender domain is ready to send emails? (verify_sender_domain) +
You run verify_sender_domain first. This tool triggers a DNS verification check and tells you immediately if the domain passes or fails the ownership test, stopping potential failures before they happen.
What's the difference between sending one email and using send_bulk_transactional_emails? +
Use send_single_transactional_email for single sends. Use send_bulk_transactional_emails when you have many messages (up to 500) that need to go out in one reliable API batch call.
Can I check the details of a message I sent before? (get_sent_message_details) +
Yes. get_sent_message_details allows you to fetch all metadata and the full lifecycle history for any specific message ID, perfect for debugging.
How do I find out who my recipients are? (list_email_recipients) +
list_email_recipients queries your account database and gives you a complete list of every recipient address recorded in MailerSend. It's the fastest way to vet your mailing list.
How do I use `list_domain_activity` to track opens or clicks for a specific domain? +
The tool aggregates all activity logs. You pass the domain ID and specify the event type (like 'opened' or 'clicked') to filter results. This lets you build reports on user engagement trends over time.
What should I do if `send_bulk_transactional_emails` fails due to rate limits? +
If the batch hits a limit, the API response contains an error code and suggested retry window. Your agent should catch this specific code and reschedule the remaining messages for later execution.
How do I use `list_sender_domains` to audit all my available sending domains? +
Running list_sender_domains retrieves a full inventory of every domain linked to your account. This is useful for auditing which domains are verified, unverified, or inactive.
When I use `get_recipient_details`, what specific data points do I get about a recipient? +
The tool returns metadata on the individual recipient, including their associated user ID and any custom tags. This allows your agent to check if they match criteria before sending.
Can I use templates with the send_transactional_email tool? +
Yes, you can specify a template_id within the email_json body to use pre-defined designs created in your MailerSend account.
How do I filter activity for a specific event like 'opened'? +
Use the list_domain_activity tool and provide the params string with the desired event types (e.g., event[]=opened).
Is there a limit to bulk email requests? +
The send_bulk_transactional_emails tool supports up to 500 email objects per single request as per MailerSend API limits.
Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.
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