Qualisend Email Verification is answering right now. Last checked 2 min ago. It exposes 12 tools.
Verify email addresses and clean lists to improve deliverability and sender reputation.
Uptime history
63 days of history · worst day 43%
63 days agonow
100.0%
Uptime 24h
92 of 92 checks
12
Tools
read from the server
199 ms
Response time
average over 24h
open, no key
Access
streamable-http
What changed 9
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 11 September 2026. No other catalogue keeps this.
17 Sep
a tool description was rewritten
check_blacklist
11 Sep
6 tool descriptions were rewritten
analyze_email_header, check_blacklist, check_disposable and 3 more
11 Sep
2 tools changed the parameters they ask for
verify_emails, verify_list
Nothing serious here today
Today is the operative word: we check Qualisend Email Verification every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.
run in your terminal
claude mcp add email-verification --transport http https://app.qualisend.com/api/mcp~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"email-verification": {
"url": "https://app.qualisend.com/api/mcp"
}
}
}~/.codex/config.toml
[mcp_servers.email-verification]
url = "https://app.qualisend.com/api/mcp".cursor/mcp.json
{
"mcpServers": {
"email-verification": {
"url": "https://app.qualisend.com/api/mcp"
}
}
}.vscode/mcp.json
{
"mcpServers": {
"email-verification": {
"url": "https://app.qualisend.com/api/mcp"
}
}
}Available tools 12
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
verify
verify_email
Verify a single email address - syntax, domain/MX, disposable + role detection, typo suggestion, and mailbox reachability. Returns a deliverability verdict (deliverable / risky / undeliverable / unknown). Consumes 1 credit.
verify_emails
Verify up to 50 email addresses at once and get a deliverability verdict for each, synchronously. Consumes 1 credit per address. For larger lists (up to 1000), use verify_list.
verify_list
Verify a large list of up to 1000 email addresses. This runs ASYNCHRONOUSLY: it creates ONE bulk job, returns a job_id immediately, and the mailbox probes run in the background. Poll get_verification with the job_id for progress and a result summary (counts by verdict). Consumes 1 credit per address. For lists larger than 1000, use the Qualisend dashboard or bulk API.
analyze
analyze_email_header
Read the hidden technical details of an email (its 'headers') to show the route it took, how long each step took, and whether it passed spam/authentication checks - handy for figuring out why a message was slow or went to spam. Paste the message source / 'Show original'. No credit used. Available on the Qualisend Pro plan.
blacklist
check_blacklist
Check whether a sending domain or IP is currently on any of the major email blacklists that can push your mail to spam - a point-in-time reputation check across lists like Spamhaus, SpamCop, and Barracuda. No credit used. Requires the Qualisend Blacklist Monitoring add-on. Read the result carefully: `listed_on` are confirmed listings, while `undetermined_on` are lists that did not answer (commonly Spamhaus refusing a shared resolver). `clean` is true only when every list answered and none matched, so a non-empty `undetermined_on` means those lists are UNKNOWN - do not report them as clear or as listings.
credit
get_credit_balance
Return the number of verification credits available in your Qualisend workspace.
disposable
check_disposable
Tell whether an email address is a throwaway/temporary one, a generic team inbox (like info@ or support@), or a free consumer address (like gmail) - useful for spotting low-quality sign-ups. No credit used. Available on the Qualisend Pro plan.
domain
check_domain
Check whether a domain is set up to send email that reaches the inbox - its mail servers plus its SPF and DMARC sender-authentication, and what's missing. A plain deliverability health check for a sending domain. No credit used. Available on the Qualisend Pro plan.
generate
generate_dns_record
Create the exact DNS setting a domain needs so its email is trusted and harder to spoof - SPF, DMARC, BIMI, or MTA-STS. Returns the record to copy into DNS, with where to put it. No credit used. Available on the Qualisend Pro plan.
lookup
lookup_smtp_code
Explain a mail-server reply/error code (like 550 or 5.1.1) in plain English, and say whether it's a temporary hiccup or a permanent failure. No credit used. Available on the Qualisend Pro plan.
typo
check_typo
Spot a likely typo in an email's domain (like gmial.com) and suggest the correct one, so you don't lose contacts to misspelled addresses. No credit used. Available on the Qualisend Pro plan.
verification
get_verification
Look up the status and result of a verification you started, by job_id (returned from verify_email/verify_emails). For a single check it returns the final verdict once the mailbox probe completes; for a batch it returns progress + a result-mix summary.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://app.qualisend.com/api/mcp | streamable-http | answering | 169 ms | 2 min ago |
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Qualisend Email Verification — questions
Answers built from our own checks of this server.
What can Qualisend Email Verification do?
It exposes 12 tools, read directly from the server on our last check. Among them: analyze_email_header, check_blacklist, check_disposable, check_domain, check_typo, generate_dns_record and 6 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is Qualisend Email Verification working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 199 ms. The bar chart above shows every period we have measured.
How do I connect Qualisend Email Verification?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Qualisend Email Verification need an API key?
No. Qualisend Email Verification completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 12 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Qualisend Email Verification?
It answers our handshake in 199 ms on average, which is faster than 62% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.