Propane Duty to Warn Mailings, Done for You
A propane Duty to Warn mailing is a yearly safety notice sent to every customer. It tells them what propane smells like and what to do if they smell gas. Propane Safety Pro does the whole job for you: the brochure, the envelope, the label and the mailing, plus a mailing confirmation for your files.
Reviewed Oct 2026
Get your Duty to Warn quote
Tell us how many customers you mail. We reply the same business day.
What goes in the envelope
A safety brochure your customer can read in two minutes:
- What propane smells like: rotten eggs.
- Smell gas? Leave first, call second. Make the call from outside, away from the house.
- Don't light a match, flip a switch or use a phone inside.
- If you run out of gas, don't turn it back on yourself. A trained tech has to check for leaks first.
- If the gas doesn't smell as strong as it used to, call us. The smell can fade inside a tank.
Plus a short letter from your company with your name and your phone number on it.
What you do, and what we do
You send us your customer list. We print the brochure, stuff the envelopes, put on the labels and mail it. Your office never touches a box of envelopes.
For a quote, start with your customer count. Before transferring a file, use our customer-list vendor-review checklist to confirm the fields needed and have your office approve the handoff. Ask for written handling arrangements before releasing the agreed list.
When to send it
Most propane companies mail it once a year, often before heating season or at year-end. Every new customer should get one when service starts, too. If your mailing is already on the calendar, now is the time to set it up.
The record that backs you up
Your drivers warn customers face to face every day. The mailing puts that warning in writing for every customer at once. Keep your mailing list with our mailing confirmation, and you can show who got it and when.
Who runs it
Bill Stomp ran 87+ propane branches in 12 states and helped 200+ propane companies. He was VP of sales and marketing for a multi-state fuel company.
Questions and answers
Is Duty to Warn required by law?
No single federal law spells it out. It comes from state product-liability and negligence case law, and insurance companies and industry lawyers treat a yearly mailing as standard practice.
What goes in a Duty to Warn mailing?
A short letter from your company and a safety brochure. The brochure covers how to smell a leak, what to do, and what to do after running out of gas. It goes to every customer.
How often should we send it?
Most companies mail it once a year. New customers should get it when service starts.
How do we show customers were warned?
Keep the list you mailed to with a dated mailing confirmation. We can send that confirmation with your mailing.
What do you need from us?
Your customer list with mailing addresses, and your company name, logo and phone number for the letter. We handle the rest.
Can you handle a large customer list?
Yes. Tell us how many customers you have, and we will quote the job to that size.
The mailing warns your customers. The Safety App proves you checked their tanks: a dated photo record from every delivery, on a monthly plan. See the Safety App
Get your Duty to Warn quote
Tell us how many customers you mail. We reply the same business day.
General information, not legal advice.