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AI Agents Can Mail Real Letters Now: Have It Printed Joins the Official MCP Registry

Software that writes your letters can now send them too, printed and in the mailbox.

Press release ·

LOS ANGELES, September 5, 2026 — AI agents are taking over the errands, and mailing a document is now one of them. Have It Printed’s print-and-mail service is listed in the official Model Context Protocol (MCP) Registry, the public directory AI agents and developer tools use to find services they can connect to.

An agent that connects can price a mailing and set up a print-and-mail order for a document, and Have It Printed prints it and mails it to any US address. That beats another email: about one in eight marketing emails never reaches the inbox, according to Validity’s 2026 Email Deliverability Benchmark Report. Developer details are at agents.haveitprinted.com.

“Agents write the letter, and now they can mail it. Real paper, real postage, a real mailbox at the other end.”

Evan King, founder of Have It Printed and SentInstantly

Press contact

press@haveitprinted.com
Have It Printed, LLC · 1308 E Colorado Blvd, #3278, Pasadena, CA 91106

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About Have It Printed

Have It Printed turns anything on your phone into real mail. People upload a PDF or a photo, or write a letter in the iPhone or Android app, and Have It Printed prints it and mails it to any address in the United States: a $3 letter, $11 Certified Mail ($14 with a return receipt), flat & tracked from $15 in a rigid mailer, or a designed postcard from $2. Printing, paper and postage are included, the exact price shows before checkout, and no account is needed.

About SentInstantly

SentInstantly sends real letters. Type the message on your phone or computer, and SentInstantly prints it in a handwriting-style font on designed stationery and mails it to any address in the United States: a $3 letter, folded and mailed USPS First-Class; an $11 Certified letter with a tracking number; flat and tracked from $15 in a rigid mailer; or a postcard from $2. Postage is included. SentInstantly is a brand of Have It Printed, LLC, available at sentinstantly.com and in the SentInstantly app for iPhone and Android.