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Guide
How to mail a demand letter (and keep proof)
If you are sending a demand letter, the goal is clarity and documentation. This guide covers how to package the letter, keep copies, and choose the right mail option.
Published Jan 20, 2026
How it works
Step 1
Finalize the letter
Keep it factual and professional.
Step 2
Add attachments
Invoice, contract, or timeline (if relevant).
Step 3
Create a single PDF
Put the letter first, then attachments.
Step 4
Choose delivery options
First Class or Express, plus Certified Mail (First Class only) if you need proof.
Step 5
Mail it
We print and mail the packet via USPS.
Keep proof of delivery
If proof matters, use Certified Mail with electronic return receipt (First Class only). It provides USPS tracking and a digital delivery record.
Certified Mail with electronic return receipt (First Class only)
Common mistakes to avoid
- Missing invoice numbers or amounts.
- No clear deadline date.
- Unclear payment instructions.
- Sending separate files instead of one PDF packet.
What you get
- • Demand letters mailed from a PDF
- • Certified Mail with electronic return receipt (First Class only)
- • First Class or Express delivery options
FAQs
- Do you offer tracking?
- Yes. Add Certified Mail with electronic return receipt (First Class only).
- Can I mail from my phone?
- Yes. Upload a PDF from your phone and check out on mobile.
Ready to send it?
Upload your finalized PDF and we will handle printing and USPS mailing.