Lets an assistant verify email addresses in real time and find business email addresses with live mailbox checks.
What you can do
This remote server lets an assistant verify email addresses in real time and find business email addresses using live mailbox checks. It connects over a streamable HTTP endpoint and authenticates with an API key header. Individual tools are not listed in the input.
When to use it
Use it when an assistant needs to confirm whether an email address is real and deliverable before sending, or to find business email addresses for a contact list. Suited to list cleaning and prospecting.
Requirements
Network access to the remote endpoint, plus a ClearBounce API key supplied in the X-API-Key header. No local runtime or environment variables are needed.
Before you install
Requires a ClearBounce API key (X-API-Key header); keep it private. Email addresses are sent to a third-party service for verification, which may involve personal data, so check that this fits your privacy obligations.
Connect X-API-Key credentials. They are stored privately and never shown on public pages.
Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/net.clearbounce%2Femail-verification/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.
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.
Parametersemailrequired
find_email
Find Business Email Address
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.
Parametersnamerequireddomainrequired
verify_bulk
Verify Email List (Bulk)
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.
Parametersemailsrequired
check_bulk_status
Check Bulk Job Status
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 instead of listing individual addresses; the full result file can be downloaded from the ClearBounce dashboard.
ParametersjobIdrequired
check_credits
Check Credit Balance
Return the remaining verification credit balance for the account that owns the API key. Free.
Takes no parameters.
Version history
1
v1.0.0LatestSep 16, 2026
Score
83%
83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.