usefulapiEmailable MCP server
Verify email addresses with Emailable one by one or in batches, and read credits and batch results. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
What can I ask?
Turn on the Emailable connector, then ask in plain words. The AI picks the tools.
- How many email verification credits do I have left?
- Show my remaining email checking credits and the account owner's email.
- Do I have enough credits to verify a list of 500 email addresses?
- Show the deliverable and risky counts for my email batch ID 5f2a9.
What you can do with Emailable in Claude and ChatGPT
For marketers and developers who clean email lists with Emailable.
Check your verification credits before a big list
The AI reads the available credits and the account owner's email. You can see if you have enough credits for a list.
Verify one email address
The AI verifies one address and returns the state (deliverable, undeliverable, risky or unknown), the reason, a score from 0 to 100 and flags such as disposable or role. It uses 1 credit.
Changes dataVerify a list of up to 5000 emails in one batch
The AI starts a batch verification for a list of email addresses. The batch uses 1 credit per address when it is created.
Changes dataRead the results of a batch
The AI reads a batch's progress and its counts of deliverable, undeliverable, risky and unknown emails. For batches of up to 1,000 emails it also gets the results.
How do I connect Emailable?
Before you connect
The login page asks for your Emailable private API key.
Find it in Emailable → API → your API keys (create a private key; do not restrict it to trusted IP addresses, because Cloudflare's IPs change). Use a test_ key to try it without spending credits. A live_ key spends your Emailable credits (1 per verified email), and a bulk batch may charge your saved card if credits run short. Your key is used only to call the Emailable API on your behalf; it is never shown to anyone.
Claude claude.ai · Desktop
- Open Customize → Connectors, then click + Add → Add custom connector.
- Enter the name Emailable and this URL, then click Add:https://
emailable. usefulapi. io/ mcp - Claude opens the login page: enter your Emailable private API key.
- In a chat, click + → Connectors and turn on Emailable.
Team and Enterprise: an Owner adds the connector for the organization first.
ChatGPT chatgpt.com
- Open Plugins, click +, then Add custom MCP server.
- Enter the name Emailable and this URL, choose OAuth as the authentication, confirm the warning and create it:https://
emailable. usefulapi. io/ mcp - ChatGPT opens the login page: enter your Emailable private API key.
- In Plugins, install Emailable, then choose it in a chat.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Claude Code
Run this command, then run /mcp in Claude Code to log in:
Cursor
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"emailable": {
"url": "https://emailable.usefulapi.io/mcp"
}
}
} VS Code
Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"emailable": {
"type": "http",
"url": "https://emailable.usefulapi.io/mcp"
}
}
} Codex
Run these commands. The second one opens the login page:
Other clients
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Emailable private API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Emailable server only. Ask your AI to run emailable_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with emailable_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with emailable_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
Tools 8
Show all 8 tools (the AI picks them for you)
Read only · 2
- Get account and credits
emailable_get_accountThe Emailable account behind this API key: the owner's email and available_credits. Check it before a large batch. - Get a batch verification
emailable_get_batchStatus and results of a batch made with emailable_create_batch: message, progress (processed/total), reason_counts and total_counts (deliverable, undeliverable, risky, unknown). Batches of up to 1,000 emails also return the results inline in `emails` (30 days). They come in pages: up to `limit` results, fewer if the reply would get too long; ask for the next page with emails_page.next_offset. A bigger batch returns download_file, a temporary link (5 days) to a ZIP of a CSV: share it only with the account owner. Free to call.
Changes data · 2
- Verify one email address
emailable_verify_emailSPENDS CREDITS: verifies one email address and uses 1 Emailable credit (a test_ API key spends none). Returns state (deliverable, undeliverable, risky, unknown), reason, score (0-100), and flags: disposable, free, role, accept_all, no_reply, mailbox_full, plus did_you_mean (a typo fix), the detected user/domain/tag, mx_record and smtp_provider. A credit is returned for an unknown result. The call is never retried automatically. If the reply is {status: "try_again"}, the check took longer than the timeout: call again with the same email; repeats within 5 minutes are not charged. Emailable's terms allow verification of opt-in subscribers' addresses. - Create a batch verification
emailable_create_batchSPENDS CREDITS: starts a bulk verification of up to 5000 email addresses. Emailable takes 1 credit per email when the batch is created, and if the account has too few credits it may charge the account's saved card to buy more. A test_ API key spends nothing. The batch cannot be cancelled here, and the call is never retried: if it fails or times out, check emailable_get_account before trying again, because a retry can charge twice. Returns the batch id; poll it with emailable_get_batch. Emailable's terms allow verification of opt-in subscribers' addresses.
Your usefulapi plan · 4
- Usage status (free-tier meter)
emailable_usage_statusReport the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. - Request a missing feature
emailable_request_featureTell usefulapi that the user needs something the Emailable tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. - Upgrade to Pro or Pro+
emailable_upgradeGet a paid plan for Emailable (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter. - Cancel the Pro subscription
emailable_cancel_subscriptionCancel the caller's Emailable Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run emailable_upgrade later to undo the cancel before the period ends. Does not count against the meter.
FAQ
What can I do with Emailable in Claude or ChatGPT?
Check your verification credits before a big list. Verify one email address. Verify a list of up to 5000 emails in one batch. Read the results of a batch. See what you can do for the details.
Is this an official Emailable product?
No. usefulapi is an independent service. It is not affiliated with or endorsed by Emailable. The server calls the Emailable API with your own Emailable access, so it sees only the data that your account can see.
Can I connect Emailable to Claude or ChatGPT?
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
What do I need to connect?
The login page asks for your Emailable private API key. See Before you connect for where to find it.
Do I put my Emailable key or an Authorization header in the client config?
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Emailable private API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
How do you keep my Emailable credentials?
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Emailable API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Emailable.
Can the AI change my Emailable data?
Yes, if you approve it. 2 of the 4 Emailable tools can create or change data. The other 2 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
What does it cost?
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Emailable server only. Cancel any time: your paid plan then runs to the end of the paid period. Run emailable_usage_status to see how many calls you used.
How do I subscribe or cancel?
Ask the AI to run emailable_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run emailable_cancel_subscription. Your paid plan continues to the end of the paid period.
What if a Emailable tool that I need is missing?
Tell the AI what you wanted to do. It can send the request with emailable_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Which AI clients can I use?
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.