ClearBounce Email Verification MCP server

• check_bulk_statusFree

  Check the progress of a bulk verification job started with verify_bulk. Free. Returns status (pending, processing, completed, failed), percent progress, and — once completed — the summary counts (deliverable, undeliverable, risky, unknown, catch-all). Report the summary to the user; when they need the result for each address, call get_bulk_results. The full result file can also be downloaded from the ClearBounce dashboard.

• check_creditsFree

  Return the remaining verification credit balance for the account that owns the API key. Free.

• find_emailwrite actionFree

  Find a person's business email address from their full name and company domain. Returns candidate addresses with confidence scores, based on published sources and common company address patterns. Finding is free, but candidates are pattern-based guesses until verified. After showing the candidates, tell the user that confirming deliverability costs 1 credit per candidate checked, and ask before verifying. With approval, call verify_email on candidates one at a time starting from the highest confidence, and stop at the first deliverable result.

• get_bulk_resultsFree

  Get the per-address results of a completed verify_bulk job: status, sub-status and score for each address. Free — no credits. Use this when the user needs to know which addresses passed or failed; do not re-verify them with verify_email. Optionally filter by status, and page through large jobs with offset (up to 500 results per call).

• verify_bulkFree

  Verify a list of email addresses (2 to 10,000) as one bulk job using the full ClearBounce bulk pipeline — per-domain caching and greylist retries give better accuracy than verifying one by one. Costs 1 credit per unique address; duplicates are removed for free. Returns a jobId immediately (the job runs in the background, roughly 1-10 minutes depending on size). Use check_bulk_status with the jobId to get progress and the final summary. Before starting a large list, confirm with the user that spending that many credits is intended.

• verify_emailwrite actionFree

  Verify a single email address in real time with a live mailbox check. Returns status (deliverable, undeliverable, risky, unknown), a sub-status reason, a 0-100 quality score, and detailed checks (syntax, MX records, disposable, role-based, catch-all, typo detection). Costs 1 credit per call.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 1744ms20/20
• Tool poisoning6 tool descriptions checked15/15
• Auth qualityAPI key sent as a header8/15
• Maintenanceno repository listed3/15
• Maintainer identityendpoint served from the registry-verified namespace domain8/10

Safety score

72/100

higher than 42% of 916 Email servers

Tools

6

the typical Email server has 7

Tools that change things

33%

typical: 25%. Fewer write tools means less an agent can break

Uptime

100%

of our recent checks; the typical remote Email server answers 100%

Response time

554 ms

faster than 25% of 609 Email servers

Grade history

• 2026-11-03restoreC → Bscore 72: No source repository listed

ClearBounce Email Verification: common questions

Is ClearBounce Email Verification MCP server safe?

Mostly: it is graded B (72/100). Read the ClearBounce Email Verification safety report

How do I install ClearBounce Email Verification?

It runs remotely at clearbounce.net. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does ClearBounce Email Verification need an API key?

Yes. The registry entry asks for X-API-Key.

Is ClearBounce Email Verification maintained?

The latest release is v1.0.0.

Is ClearBounce Email Verification up?

100% of our last 28 checks got an answer. We check remote servers about four times a day.

What can I use instead of ClearBounce Email Verification?

Servers from other publishers that do the same job: MCPEmails MCP server, ReplyLayer MCP server and MailProbe MCP server.

How does ClearBounce Email Verification compare with other Email MCP servers?

safety score 72/100 (higher than 42% of 916 Email servers); tools 6 (the typical Email server has 7); tools that change things 33% (typical: 25%. Fewer write tools means less an agent can break). Full comparison.