---
title: How-to guides
description: Quick guides for preparing and mailing documents with PostalForm. These cover scanning, file prep, and common mailing steps.
seo-description: How-to guides for preparing, scanning, and mailing documents.
group: content
indexable: true
schema: article
eyebrow: How-to
published: 2026-01-15T23:12:40-06:00
updated: 2026-06-17
path: /how-to
---
# How-to guides

Quick guides for preparing and mailing documents with PostalForm. These cover scanning, file prep, and common mailing steps.

## Popular topics
- Scanning signed forms on your phone
- Combining multiple documents into one PDF
- Mailing without a printer or stamps

## How it works with PostalForm
1. **Prepare your PDF**
2. **Add addresses**
3. **Checkout** and we print + mail it

## Articles
- [How to scan a signed form and turn it into a clean PDF](/how-to/scan-signed-form-to-pdf)
- [Certified Mail cost breakdown (USPS fees and total formula)](/certified-mail-cost-breakdown)
- [Certified vs Registered Mail (security, speed, and cost)](/certified-vs-registered-mail)
- [How many pages can you mail with one stamp?](/how-many-pages-can-you-mail-with-one-stamp)
- [Can USPS print my PDF?](/can-usps-print-my-pdf)
- [Can you send a letter online through USPS?](/send-letter-online-through-usps)
- [Mail a letter from your computer](/send-letter-online)
- [Mail a letter from your laptop](/send-letter-online)
- [Fastest way to mail a physical letter online without a printer](/fastest-way-to-mail-a-physical-letter-online-without-a-printer)
- [Mail a physical USPS letter from your computer without stamps or envelopes](/send-letter-online)
- [How to send one dispute letter to 20 addresses without printing](/send-one-dispute-letter-to-20-addresses-without-printing)


## Ready to send it?
Upload your PDF and we will mail it.

[Mail my document](/send-letter-online)