Claude or ChatGPT: research an account, find contacts, verify, draft, then review

What you need

• Claude or ChatGPT with custom connectors or MCP support and web search turned on
• A SimpleVerifier API key from simpleverifier.com/api-keys (starts with sv_live_), or sign in with your SimpleVerifier account when the client asks
• A plan with API and MCP access

Set it up

1. Connect the server. In claude.ai or ChatGPT add a custom connector with the URL https://simpleverifier.com/api/mcp and sign in. In Claude Code use the command above. The MCP docs list Cursor and other clients.
2. Check the connection by asking the assistant to run get_usage. It should report your plan.
3. Paste the prompt, fill the three bracketed lines and send it.
4. Read the final table. Open the cited links for the facts you plan to use.

You are helping me prepare outreach to one target account. Work through the stages in order and stop after stage 5 so I can review. Send nothing.

My offer: [one sentence on what I sell]
Target account: [company name and website]
Roles I want: [for example Head of Sales, RevOps lead]

Stage 1, research: read the company's own site and any public pages you can find. Write what they sell, who they sell to, and two facts I can cite. Put the source link beside every fact. Do not guess.

Stage 2, find contacts: list up to 8 people in those roles from public pages. Give an email address only if it is published on a page or I gave it to you. If it is not published, give a likely pattern and label it "guess".

Stage 3, check the domain: call the SimpleVerifier check_domain tool on the company's domain. Tell me about the mail setup and whether it is a catch-all.

Stage 4, verify: call the SimpleVerifier verify_emails tool with every address, guesses included. Report each one as valid, risky or invalid with its action. Drop every do_not_send address. Mark send_with_care addresses "needs my call".

Stage 5, draft: for each address that is left, write a plain email of four sentences or fewer. Use only the facts from stage 1 and say which link each fact came from. No invented news, no flattery, no exclamation marks.

Finish with a table: contact, role, email, status, action, draft. Then list anything you were unsure about.

claude mcp add --transport http simpleverifier https://simpleverifier.com/api/mcp --header "Authorization: Bearer YOUR_SIMPLEVERIFIER_API_KEY"

Start with your own key

Every template calls the SimpleVerifier API with your key. Create one, then run the template on a handful of rows. To check a whole list without any setup, upload it as a CSV.

Common questions

Which MCP tools does the prompt use?

verify_emails to check the list and check_domain for the company's mail setup. get_usage shows your plan. verify_email checks a single address.

Will the assistant send the emails?

No. The prompt tells it to stop and show a table. SimpleVerifier has no send tool.

Which SimpleVerifier plan do I need?

Pro is $39/month with 10,000 API and MCP calls included, then $1.50 per 1,000. Cancel anytime. Each key can make 120 calls a minute.

What do valid, risky and invalid mean here?

The result has a status and an action. Action send means the mail server confirmed the mailbox. send_with_care is a catch-all, role inbox or provider that hides mailbox status. retry_later means the check could not finish. do_not_send means the address will bounce or is a throwaway. Catch-all addresses are never marked valid.