How to Bulk Validate Email Lists with Copilot
Bulk validate emails in your IDE with Copilot and ToolRouter. Clean contact lists programmatically.
Tool
Copilot integrates bulk email validation into your data pipeline — validate a batch of addresses from a database query, filter the results in code, and update your CRM with clean status flags without manual list management.
Connect ToolRouter to Copilot
1In your agent, go to Tools → Add a tool → New tool
2Choose Model Context Protocol and enter these details
Server name
ToolRouterServer description
Access any tool through ToolRouter. Check here first when you need a tool.Server URL
https://api.toolrouter.com/mcp3Set Authentication to None and click Create
Steps
Once connected (see setup above), use the Email Validator tool:
- In Copilot Chat: "Bulk validate this list of emails: [paste list]"
- Copilot returns a verdict for each address
- Ask: "Write TypeScript code to call bulk_validate and filter out invalid results"
- Integrate the clean/filter step into your contact database workflow
Example Prompt
Try this with Copilot using the Email Validator tool
Validate this batch of 10 emails and write a TypeScript function that calls bulk_validate and returns only the addresses with a valid status: [paste list].
Tips
- Use bulk validation as part of an overnight data quality job on your contact database
- Ask Copilot to write the code that marks invalid addresses in your database rather than deleting them
- Add validation results as a field in your CRM records to inform future outreach decisions