What people actually mail

Send the demand as USPS Certified Mail for $12.99, or $14.99 with an electronic Return Receipt. USPS records when it was mailed and when it was signed for. Paste the text or upload a PDF; it is handed to USPS the next business day.

Gyms and subscription services that require written cancellation can be canceled with a mailed letter for $0.99 First-Class

Solo attorneys and small firms can send Certified legal correspondence

Tenants and landlords can send notices as USPS Certified Mail for $12.99, or $14.99 with an electronic Return Receipt. USPS records the mailing date and, with the receipt, the delivery date. No printer, no post office trip.

Real-estate letters

Homeowners can mail dispute letters, architectural requests, and records demands to their HOA

Notices to pay rent or quit, cure-or-quit notices, and lease-termination notices can be sent as USPS Certified Mail for $12.99 ($14.99 with electronic Return Receipt) so the notice period has a provable start date before you file for eviction.

Seller disclosure statements and similar required real-estate disclosures can be mailed Certified with electronic Return Receipt for $14.99 so the delivery date

Insurance claim letters, appeals, and cancellation notices can be sent as USPS Certified Mail for $12.99 ($14.99 with electronic Return Receipt) so you have dated proof the insurer received them

Letters to the IRS, state tax boards, DMVs, and other agencies can be sent as USPS Certified Mail for $12.99 online

Small businesses can mail an invoice or past-due notice First-Class for $0.99

A physical letter to a member of Congress, a state legislator, or a city council member costs $0.99 First-Class and carries more weight than email

A thank-you note on real paper, typeset in a handwriting-style font and mailed via USPS for $0.99, arrives in 3–5 days

You can type a personal letter, have it typeset in a handwriting-style font, and mailed anywhere in the US via USPS for $0.99

A written apology or service-recovery note

A condolence note can be typed, set in handwriting-style script on a folded 5x7 card, and mailed via USPS from $1.99

A dentist, salon, clinic, or event organizer can mail a reminder postcard

An AI agent, CRM automation, or real estate tool can trigger a single outreach postcard

A local business can mail a personal-feeling, handwriting-style marketing postcard

You can text a recipient's address and a short message to paperplane and get a quote back