Submit a list of email addresses for bulk verification. Returns a job ID to track progress. Quick mode: 1 credit/email. Deep mode: 2 credits/email. Max 50,000 emails per job.
AI agents call verify_email_bulk to retrieve information from TrekMail MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Email verification is a read operation—it queries the status or validity of email addresses but does not create, modify, delete, or execute code. The credit system is a usage metric, not a financial transaction. This tool poses minimal risk even if misused by an AI agent; the worst outcome would be wasted credits on verifying invalid addresses.
From the tool's definition The tool description states it 'Submit[s] a list of email addresses for bulk verification' and 'Returns a job ID to track progress.' This is a query operation that checks the validity of email addresses without modifying any data or triggering external side…
Attacks that exploit this kind of access
Submit a list of email addresses for bulk verification. Returns a job ID to track progress. Quick mode: 1 credit/email. Deep mode: 2 credits/email. Max 50,000 emails per job. It is categorised as a Read tool in the TrekMail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for verify_email_bulk: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches TrekMail MCP Server. Nothing to install.
verify_email_bulk is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the verify_email_bulk rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for verify_email_bulk. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
verify_email_bulk is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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