The quick answer

PieterPost lets you write or upload, preview, and send to a US address without an account. Also compare Mail a Letter Online, Mailform, PostalForm, The Letter Pilot, and MappyMail for guest US letter workflows.

What “no account” means

Guest checkout means you do not need to create a password or open a reusable customer account for the one-off order. It does not mean anonymous mailing. The service still needs a deliverable recipient address, payment, and the contact details required for the order.

Some providers have both a guest form and an account dashboard. The guest flow may be for single letters, while bulk sending, invoices, saved contacts, or APIs need an account. Compare the entry point you intend to use.

Compare the guest US letter flows

For a US recipient, compare PieterPost, Mail a Letter Online, Mailform, PostalForm, The Letter Pilot, and MappyMail. Some support an online editor; others focus on an uploaded document. Choose the route that lets you inspect the final letter before paying.

These are documented options, not a claim that every service has the same postal routes or payment methods. Check the selected destination before uploading a sensitive document. Use a provider that gives you a clear preview and order total.

The four things to check before paying

  1. Confirm the recipient name, street, postcode, city, and country.
  2. Check the final page order, paper size, margins, and address area.
  3. Select ordinary, registered, or Certified Mail for the task.
  4. Save the confirmation and any order-status link.

Guest checkout can be enough for an occasional letter. If you send often, an account with saved addresses and history can be useful. Choose it when those features help your workflow.

Services to compare

PieterPost

One-off US letters & Certified Mail

Mail a Letter Online

US documents & attachments

Mailform

US PDFs & mailing options

PostalForm

US letters & guided forms

The Letter Pilot

US guest letter writing

MappyMail

Map-based US addressing

PostSeal

Single letters & international

Each profile links to the official product sources and states the research date. Service research dates range from 14 to 20 October 2026.

Good questions. Clear answers.

Can I send a letter without signing up?

Yes. The services in this shortlist advertise guest sending for at least one letter workflow. Destination, document, and payment conditions still apply.

Will I still need to give an email address?

Usually yes, for the order confirmation and status information. No account does not mean that no contact details are collected.