ZeroBounce MCP for AI. Clean your lists, boost deliverability, stop bounces.
Gemini Works with every AI agent you already use
…and any MCP-compatible client
Connect to your AI in seconds.
ZeroBounce validates email addresses in real time or on bulk lists. This MCP checks if an email is active, disposable, or invalid, drastically improving your campaign deliverability rates.
It also scores entire files to help you focus only on the highest-value leads.
What your AI can do
Get activity
Checks a specific email address's usage data to determine if it has been active within certain timeframes.
Get credits
Retrieves your current remaining credit balance for the ZeroBounce service.
Score file
Generates a quality score, from 0 to 100, for an entire file containing many emails.
Ask an AI about this
Waiting for input…
ZeroBounce: 5 Tools for Email Deliverability
These tools give you full control over list quality, allowing you to validate single emails, score files, or check historical account activity.
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 ZeroBounce on VinkiusGet Activity
Checks a specific email address's usage data to determine if it has been active within certain timeframes.
Get Credits
Retrieves your current remaining credit balance for the ZeroBounce service.
Score File
Generates a quality score, from 0 to 100, for an entire file containing many emails.
Validate Batch
Runs validation checks on a group of up to 100 email addresses simultaneously.
Validate Email
Performs a quick, deep check on one individual email address's validity and risk...
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.
Claude AI
Open Claude Settings
Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
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.
Start a conversation
Open a new chat. The ZeroBounce 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 every call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with ZeroBounce, then connect any of our 5,100+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,100+ 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
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by ZeroBounce. 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 INFRASTRUCTURE
Cloud Hosted
Managed infra
V8 Isolated
Sandboxed per request
Zero-Trust Proxy
No stored credentials
DLP Enforced
Policy on every call
GDPR Compliant
EU data residency
Token Compression
~60% cost reduction
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 connection provides 5 powerful capabilities that interface natively with Claude, ChatGPT, Cursor, and other compatible AI platforms. No middleware. No custom integration required.
The Dreaded List Scrubbing Process
Today, cleaning up an email list means opening a massive CSV file. You have to manually cross-reference addresses against old data, running checks one by one, and then dumping the results into another spreadsheet. It's slow, tedious, and you always worry if you missed a dirty address or spent too many credits doing it.
With this MCP, that process vanishes. Your agent handles the entire workflow. You pass the list, and ZeroBounce returns structured data showing every single address status—valid, disposable, or inactive. The output is clean, usable, and ready for your next campaign.
ZeroBounce MCP: Instant List Quality Scoring
Before this tool, determining which leads were worth pursuing meant guessing based on how old the contact record was. You'd send emails to people who probably quit their jobs last year, wasting time and damaging your sender score.
Now, you get concrete data. The `score_file` capability gives you a clear quality number for every lead. It’s not just 'good' or 'bad'; it tells you exactly how good they are so you know where to spend your limited outreach budget.
What your AI can actually do with this
Don't send emails to dead accounts. ZeroBounce helps marketing teams clean up their contact lists before running big campaigns. You can check a single email address instantly or validate hundreds at once, protecting your sender reputation from bounces and spam traps.
The MCP lets you dig deep into list quality. Need to know if an account was active last month? You can retrieve historical activity data for any address. If you're building complex automation that runs through several platforms—say, pulling leads from a CRM, sending them a message via a communication tool, and then logging the outcome in a billing system—you can chain ZeroBounce with those other MCPs.
This means your entire workflow is managed by one agent, all running securely within Vinkius, which provides full visibility into every step taken, letting you track exactly what data flowed through.
Furthermore, if you're scoring leads based on multiple criteria, the platform uses native token optimization to cut down on processing costs while giving you a quality score for your entire list. This guarantees that only high-value contacts are passed down the line. You simply connect it to your preferred AI client and start sending out clean campaigns.
019ea611-b436-7281-91af-0a7ec1e0b080 
Here's how it actually works
The bottom line is you get confidence that the emails leaving your system are actually going to someone who uses them.
First, you subscribe to the MCP and input your ZeroBounce API Key into your preferred AI client.
Next, instruct your agent to perform an action—for example, asking it to validate a list of contacts or check the activity for specific addresses.
The platform returns structured data showing the status (valid/invalid), quality score, or historical usage details.
Who is this actually for?
This is for marketing managers and sales ops professionals whose job depends on keeping high-volume email campaigns running smoothly. If you've ever spent hours manually cleaning a spreadsheet full of outdated contacts, this MCP saves your time and reputation.
Runs weekly list cleanups before major product announcements to keep bounce rates low.
Needs to verify lead contact information on the fly during cold calls or manual outreach.
Integrates email validation checks into signup flows to block fake accounts at the source.
What Changes When You Connect
Stop sending emails to throwaway or invalid addresses. Use validate_email for immediate checks on single leads during prospecting calls.
Save time scrubbing huge lists. Run a full batch validation using validate_batch to process up to 100 contacts in one call, instead of doing it manually.
Identify your best targets first. The score_file tool gives you a quality rating for every email address, letting you focus only on high-potential leads (the 90+ score group).
Maintain service uptime by checking your account status with the get_credits tool before running large campaigns.
Determine lead engagement. Run get_activity to see if an email has been active in the last year, ensuring you're targeting people who actually use their inbox.
See it in action
Preparing for a major product launch campaign
The marketing lead needs to ensure zero bounce rates. They ask their agent to run validate_batch on the entire mailing list, followed by using score_file to filter out anything below an 80 score before sending it through the email platform.
Building a multi-stage sales sequence
An SDR uses their agent to first check if a lead's contact is valid using validate_email. If the address passes, they then ask the agent to run get_activity to confirm the account was active in the last 60 days before sending the outreach message.
Debugging low campaign performance
The ops team notices a high bounce rate. They connect their data source and ask the agent to run get_credits first, then use score_file on the last month's list to identify if poor list quality was the root cause.
Onboarding new contacts into a system
The developer integrates ZeroBounce into the signup flow. When a user submits an email, the agent immediately calls validate_email before creating the record in the database, preventing fake accounts entirely.
The honest tradeoffs
Validating emails one by one
The marketing associate manually runs a validation check for every 50 leads because they are used to doing it in their existing spreadsheet tool.
Instead, use the validate_batch tool. It processes up to 100 addresses at once, saving massive amounts of time and reducing API calls.
Assuming an email is live
Sending a major announcement blast to leads that haven't opened an email in two years, wasting send credits.
Always run get_activity first. This confirms if the lead has been active within the last 30 days before you spend time and money sending them content.
Ignoring list quality
Sending a campaign to a raw, unvetted list of contacts that includes disposable or low-quality addresses.
Use score_file on the whole list. It assigns a numerical score (0-100) so you can filter out garbage data and focus only on high-potential targets.
When It Fits, When It Doesn't
You must use this MCP if your primary goal is deliverability and cleaning contact lists before any campaign run. The tools are perfect for verifying single addresses (validate_email) or scrubbing huge datasets using score_file. However, don't use it just because you need to check credits; that’s a minor housekeeping task. If you only need to look up past usage data without validation, a simpler database query might suffice. Use this MCP when the quality of the email address itself is the critical bottleneck in your workflow.
Questions you might have
How do I check my available credits using the ZeroBounce MCP? +
Use get_credits. This tool instantly reports your remaining account balance, which is crucial for planning large-scale campaigns and preventing unexpected service interruptions.
Can I validate a list of 100 emails at once with ZeroBounce MCP? +
Yes, use validate_batch. This tool allows you to submit up to 100 addresses in one request. It's much more efficient than validating them individually using validate_email.
What is the best way to confirm lead activity with ZeroBounce MCP? +
Use get_activity. This tool lets you check if an email address has been active within a specific time range, ensuring your outreach targets people who are actually engaged.
Does the ZeroBounce MCP only validate current emails? +
No. In addition to real-time checks like validate_email, you can run score_file on bulk data, which provides a deeper analysis of overall list quality.
What does the AI Scoring result from the `score_file` tool actually mean? +
The score is a quality metric from 0-100. High scores indicate active, deliverable addresses ready for campaigns. If you get a low score, it suggests potential issues with the email that require manual review.
If I run `validate_email` and receive an error code, how do I troubleshoot it? +
The tool response specifies why validation failed. It tells you if the address is malformed, a catch-all, or known spam data, giving you exact details to fix your source list.
Are there rate limits when I use `validate_batch`? How do I handle high volume? +
Vinkius manages the call flow. While there are API usage rates, your agent controls the speed by pausing between requests if needed. This prevents hitting service-side throttling limits.
Can `score_file` process emails from any type of domain? +
Yes. The system doesn't restrict validation based on the domain source. It checks every address against its global database to verify if it's structurally valid and active.
How can I check how many credits I have left in my ZeroBounce account? +
You can use the get_credits tool. It will return the exact number of remaining credits available for validation and scoring in your account.
Is it possible to check if an email address has been active recently? +
Yes, use the get_activity tool. It checks if the email address has shown activity in the last 30, 60, 90, 180, or 365 days, helping you identify engaged users.
Can I validate multiple emails at once? +
Yes! The validate_batch tool allows you to submit an array of up to 100 email addresses in a single request for rapid verification.
We've already built the connector for ZeroBounce. Just plug in your AI agents and start using Vinkius.
No hosting. No infrastructure. No complex setup.
All 5 tools are live and waiting.
You're up and running in seconds.
Gemini Vinkius gives your AI agents access to the full catalog of app connectors, all fully managed, secure, and enterprise-ready. One subscription, every tool you need.
Built, hosted, and secured by Vinkius. You just connect and go.