The real catalog of tools for AI agents

Send real pen-written letters, cards and postcards: quote, preview, order and track by mail.

Validate UK addresses, postcodes, emails and phone numbers — Royal Mail PAF, live SMTP and HLR.

What WhichPost is, how it works, pricing and a simulated sample report. No sign-in.

Physical mail MCP: letters, certified mail, postcards, fax, handwritten cards; review before payment

Mail one-off USPS letters from ChatGPT or Claude after you approve the preview and price. US only.

Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.

Your agent's own email address: read, search, send, reply, draft and wait for mail.

Give AI assistants hands: send real USPS letters via MCP.

Check whether an email address can receive mail, one address or a list, without sending to it.

Email shape, address discarded

Give an AI agent its own email address: send, reply, read, and wait for mail.

Print and mail real letters worldwide from the EU, incl. registered mail. Quote, compose, send.

Which creator posts brought paying customers: your WhichPost reports, with ranges.

Portuguese address autocomplete, postal codes, list checks; typo-tolerant, municipality-first; free.

One inbox for all your addresses: your AI agent reads, sorts, drafts and sends with your permission.

Mail real US letters, postcards and certified mail from an agent, quoted before sending.

Disposable inboxes for AI agents: create an address, wait for the email, get the code or link.

MCP server for the Dropscan postal mail scanning API: read scanned letters, act on mailings.

Fourteen checks on an HTML email footer: CAN-SPAM postal address and 10-business-day opt-out, CASL's

Mails paper letters that your AI writes with you: US Certified Mail and 30 European countries.