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Guide
How to mail a letter online
A step-by-step guide to mail a letter online with PostalForm.
Published Jan 11, 2026 • Updated Jan 19, 2026
How it works
Step 1
Prepare your letter
Save your document as a PDF.
Step 2
Upload the PDF
Add sender + recipient addresses.
Step 3
Review and confirm
Check the preview and print options.
Step 4
Checkout
We print + mail it via USPS.
Before you send
- Use standard US letter sizing (8.5 x 11 inches).
- Include any signatures directly in the PDF.
- Double-check addresses to avoid returned mail.
If you need certified mail or tracking
PostalForm offers Certified Mail with USPS tracking and optional electronic return receipt (First Class only). You can also choose Express delivery (1-3 business days) when timing matters.
Common use cases
- Notices, statements, and formal letters
- HR, legal, and client communications
- Printed forms that must be mailed
- Mail from a phone or remote location
FAQs
- Do I need a printer or stamps?
- No. Upload a PDF and we handle printing and mailing for you.
- Can I send multi-page letters?
- Yes. Upload a PDF with multiple pages and we will mail the full document.
- Do you offer certified mail?
- Yes. Select Certified Mail at checkout to add USPS tracking with optional electronic return receipt (First Class only).
- Can I choose First Class or Express mail?
- Yes. Pick First Class (3-7 business days) or Express (1-3 business days) during checkout.
Ready to send it?
Upload your PDF and we will guide you through the mailing steps.