Guides

How to send real physical mail from an AI agent — setup, tools, and pricing.

How to dispute a credit card billing error by certified mail, with AI

Have Claude or ChatGPT draft a Fair Credit Billing Act dispute letter and mail it to your card issuer by USPS certified mail, so you can prove it arrived inside the 60-day window. From $8.61.

How to request repairs from your landlord in writing, sent by certified mail with AI

Have Claude or ChatGPT draft a written repair request to your landlord and mail it by USPS certified mail, so the clock on their duty to repair starts on a provable date. From $8.61.

How to appeal a health insurance denial by certified mail, with AI

Insurer denied your claim? Have ChatGPT or Claude draft the appeal letter from your denial notice and mail it by USPS certified mail with a return receipt. From $8.61.

How to send a construction preliminary notice by certified mail, with AI

Subcontractors and suppliers: have Claude or ChatGPT prepare your preliminary notice or notice to owner and mail it by USPS certified mail with proof of mailing. From $8.61.

How to stop a debt collector from contacting you, with a cease letter sent by AI

Have ChatGPT or Claude draft a cease communication letter under the FDCPA and mail it to the debt collector by USPS certified mail with a return receipt. From $8.61.

How to dispute a credit report error by certified mail, with AI

Have ChatGPT or Claude draft a credit report dispute letter to Equifax, Experian or TransUnion and mail it by USPS certified mail with a return receipt. From $8.61.

How to send a security deposit demand letter, with AI

Landlord kept your deposit? Have ChatGPT or Claude draft a security deposit demand letter and mail it by USPS certified mail with a return receipt. From $8.61.

How to cancel a gym membership or contract by certified mail, with AI

Some gyms and contracts only accept cancellation in writing by mail. Have Claude or ChatGPT write the letter and send it by USPS certified mail, with proof it arrived.

How to send a debt validation letter by certified mail, with AI

Have Claude or ChatGPT draft a debt validation letter and mail it to the collector by USPS certified mail with a return receipt, so you have proof of the date. From $8.61.

How to send a demand letter by certified mail, with AI

Draft a demand letter with ChatGPT or Claude and have it mailed by USPS certified mail with a return receipt, without a trip to the post office. From $8.61.

How to send a letter without a printer or stamps

No printer, no envelope, no stamps? Ask ChatGPT or Claude to mail a real USPS letter for you. It's printed, stamped and posted for $1.21 to $1.51.

How to send a tenant or landlord notice by certified mail, with AI

Mail a repair request, notice to vacate, lease non-renewal or rent notice by USPS certified mail with a return receipt, straight from Claude or ChatGPT. From $8.61.

How to send a real letter from ChatGPT

Connect Mailsnail to ChatGPT and it can mail a real USPS letter or certified letter to any US address. Add one connector URL, sign in, and ask. From $1.21 a letter.

How to send certified mail with a return receipt from an AI agent

Have Claude, ChatGPT or any MCP agent mail a USPS certified letter, with an electronic or green-card return receipt, from $8.61. No post office trip, tracking included.

Send a letter from Claude, Cursor, or Codex

The exact per-client setup for the Mailsnail MCP server — add one URL, sign in — plus a 60-second walkthrough to mail yourself a letter from your agent.

How to send physical mail from an AI agent

Connect the Mailsnail MCP server and have any AI agent mail a real USPS letter or certified mail. Nothing to install — add a URL and sign in.

Building an agent that sends mail?

Reference pages for developers: wiring Mailsnail into a client or an agent framework, and how it compares with other mail APIs.