How to Use the Mailgun (Transactional Email & Domains) MCP in Windsurf

Q: Can Cascade edit my remote templates directly?

Cascade uses gettemplates to read your layouts. It cannot overwrite them directly on Mailgun, but it can write the updated HTML locally so you can deploy it through your standard CI pipeline.

Windsurf lets Cascade autonomously manage your Mailgun transactional email infrastructure via this MCP Server directly inside your workspace.

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Connect Mailgun (Transactional Email & Domains) MCP to Windsurf

Create your Vinkius account to connect Mailgun (Transactional Email & Domains) to Windsurf and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Mailgun (Transactional Email & Domains) with Windsurf

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Automate Domain Setup with Windsurf and Mailgun

Verify sending domains instantly with `list_domains` and `get_domain` when Cascade configures your mail routes. The agent pulls the exact TXT and MX records you need to drop into your DNS manager without making you dig through the Mailgun dashboard. You do not have to prompt Cascade for each subsequent step. It checks the DNS state and immediately uses `validate_email` on a test address to confirm the route is active.

Self-Healing Suppression Lists

Clean up delivery blocks using `list_bounces` and `list_unsubscribes` when Cascade checks your sender reputation. Bounced emails ruin your sender score, so the agent monitors these lists to catch issues early. It keeps your database clean without manual intervention. If a bounce was caused by a temporary glitch, Cascade can run `delete_bounce` to let you retry that address.

Live Email Testing and Template Iteration

Preview transactional layouts via `get_templates` and `send_email` directly inside your editor. Stop copying and pasting HTML files back and forth to see if your layouts look right. Cascade pulls your active templates, merges them with local test variables, and fires a real test message to your inbox. You see the exact output of your code changes instantly.

Setup guide

Set up Mailgun (Transactional Email & Domains) MCP in Windsurf

Prerequisites

Windsurf IDE installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Click the Cascade assistant icon in the sidebar, then click the hammer icon (🔨) at the top of the panel. Select "Configure" to open ~/.codeium/windsurf/mcp_config.json.
2

Add the Mailgun (Transactional Email & Domains) MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Refresh MCPs

Go back to the hammer icon (🔨) in Cascade and click "Refresh". Windsurf will detect the new server. No full restart is needed — the connection is hot-reloaded.
4

Verify in Cascade

Start a new Cascade conversation and ask something like "Show my Mailgun (Transactional Email & Domains) payment history." If connected, Cascade will call the Mailgun (Transactional Email & Domains) tools directly. You will see a green dot next to the server name in the MCP panel.

mcp_config.json

{
  "mcpServers": {
    "mailgun-transactional-email-domains-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Mailgun. 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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Common questions about Mailgun (Transactional Email & Domains) MCP in Windsurf

Windsurf reads your API key from the local MCP configuration file. Once added, Cascade securely passes this token to the Vinkius gateway to authenticate every tool call.

No, this is built for transactional operations and domain health. Cascade uses `send_email` for operational alerts, system notifications, and testing templates, not high-volume marketing blasts.

Ask Cascade to inspect your delivery health. The agent runs `list_logs` to fetch recent events and parses any drop or bounce codes directly in your chat panel.

Cascade uses `get_templates` to read your layouts. It cannot overwrite them directly on Mailgun, but it can write the updated HTML locally so you can deploy it through your standard CI pipeline.

Your recipient email addresses and raw event logs never touch Vinkius disks. The server acts as a stateless proxy, passing payload data directly to Mailgun over encrypted TLS connections, then immediately purging the memory space.

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