Vinkius

Mailsac MCP. Automate Email Testing & Data Extraction

Mailsac manages disposable and private email addresses, letting your AI client automate testing workflows without needing real accounts. This MCP lets you reserve new, isolated inboxes, search through messages across multiple domains, and reliably extract sensitive data like verification codes or links from both plain text and HTML bodies.

Mailsac MCP is compatible with Claude Claude
Mailsac MCP is compatible with ChatGPT ChatGPT
Mailsac MCP is compatible with Cursor Cursor
Mailsac MCP is compatible with Gemini Gemini
Mailsac MCP is compatible with Windsurf Windsurf
Mailsac MCP is compatible with VS Code VS Code
Mailsac MCP is compatible with JetBrains JetBrains
Mailsac MCP is compatible with Vercel Vercel
See Vinkius in Action

Give Claude and any AI agent real-world access

Reserve and Manage Addresses

Create new, isolated private addresses, list all reserved addresses, or delete old ones to keep your setup clean.

Retrieve Message Content

Fetch the full plain text body or the sanitized HTML structure of any specific message in an inbox.

Check Inbox Status and Contents

List all messages received by a given address, allowing you to inspect what came through your temporary mailbox.

Search Across All Inboxes

Query messages across every registered address using advanced search parameters like sender or subject line (requires paid tier).

Delete and Maintain Mailboxes

Permanently remove a single message from an inbox, or completely clear out an entire mailbox when testing is finished.

Waiting for input…

AI Agent
Mailsac

What AI agents can do with Mailsac: 9 Tools for Inbox & Domain Control

These tools let your agent list reserved addresses, search messages across all domains, and perform specific content extractions from emails.

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 Mailsac MCP

List Reserved Addresses

Retrieves a list of all the enhanced or custom email addresses you have reserved in your account.

Delete Inbox Message

Permanently removes a specific message from an inbox, ensuring clean test...

List Custom Domains

Shows all the custom domains that have been linked to and are active within your...

Get Html Message Body

Pulls out the complete, sanitized HTML code from a specific message for deep...

Get Plain Text Body

Extracts only the readable plain text content from a message body, perfect for...

List Inbox Messages

Fetches a list of all messages currently sitting in a specified inbox.

Release Reserved Address

Deletes and releases an email address that you no longer need, freeing up the reserved slot.

Reserve New Address

Programmatically secures a new, unique private email address for isolated testing...

Search Account Messages

Searches for messages across all your reserved addresses using advanced search...

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.

Mailsac MCP is compatible with Claude

Claude AI

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.

2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL:

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.

3

Start a conversation

Open a new chat. The Mailsac integration is available immediately — no restart needed.

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
Start building

Make Your AI Do More

Start with Mailsac, 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
Mailsac MCP server cover

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Mailsac. 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

Your data is protected. See how we built it.

Manually tracking test emails slows down development.

Today, when your app sends a new email trigger—say, a welcome message or a failed payment alert—you have to manually open the inbox for that test address. Then you copy the content, paste it into a notepad, and sift through the HTML junk until you find the one piece of data, like an API key or verification code, you actually needed.

With this MCP, your agent handles all that noise. You tell your client to wait for the message; it retrieves the full body using `get_plain_text_body` and gives you nothing but the clean, actionable string. It saves you the copy-paste cycle every single time.

Mailsac MCP Gives You Full Control Over Inbox Data.

The biggest manual step that goes away is the guesswork. You no longer have to wonder if you're looking at plain text or a messy HTML version of the data, because your agent can decide which view—using `get_plain_text_body` or `get_html_message_body`—will give you what you need for that specific step.

It’s not just about reading emails; it's about treating them like a predictable resource. You control the entire lifecycle, from reserving the address to deleting the message with `delete_inbox_message`. That level of automation is a game-changer.

What Mailsac MCP does for your AI

Managing test emails used to be a nightmare of clicking tabs and manually copying codes. Now, your agent can handle the whole process directly. You connect this MCP via Vinkius and tell your AI client exactly what you need—whether it's checking if a new sign-up flow sends an email or grabbing a single verification code after a password reset.

Your agent reserves a clean, private address for the test run, waits for the message to land, and then pulls out only the data you asked for, whether that's raw plain text or structured HTML content. You can also inspect your entire setup by listing all reserved addresses and checking which custom domains are linked to your account.

Need cleanup? Your agent permanently deletes messages from an inbox or even clears out entire inboxes when testing is done. It’s pure automation for email-based operations.

Built · Hosted · Managed by Vinkius Mailsac MCP - Automate Disposable Email Testing
Server ID 019d75cd-1878-7253-bd65-c14fcb48f235
Vinkius Inspector
Compliance Grade A+
Score 100/100
Vinkius Inspector Badge — Score 100/100

Frequently asked questions about Mailsac MCP

How does the Mailsac MCP work for testing? +

The agent first uses reserve_new_address to create an isolated, clean inbox. When your application sends a test email, the agent detects it in that specific address and retrieves the content using tools like get_plain_text_body.

Can I search my entire Mailsac account history? +

Yes, you can use search_account_messages to query messages across all your addresses. This requires a paid tier but is essential for auditing old test data.

Is the content I get from Mailsac safe to use in my code? +

Yes, since this MCP runs through controlled API calls on Vinkius, the extracted data is passed directly as a clean string or object to your agent, making it ready for your application logic.

How do I delete an email message using Mailsac? +

You use the delete_inbox_message tool. You just need to specify which inbox and which message ID you want permanently removed, keeping your test data clean.

Can I check what domains are available for my account? +

Absolutely. The list_custom_domains tool lets you see all the custom email domains that have been linked to your Mailsac account, helping you plan new test setups.