Maybe. But a bill insert only reaches the customers who get that bill. Ask your mailer to confirm the postage class of the whole envelope before you plan around it.
Reviewed October 17, 2026
Check the whole envelope
USPS lists bills, statements of account and invoices among the mail that must go First-Class (or Priority). USPS: First-Class Mail content Take the real bill and the real insert to your mailer for review.
The Domestic Mail Manual limits bills and statements in Marketing Mail, with specific exceptions. USPS: bills and statements Do not assume your envelope qualifies for a different class because a brochure is tucked inside. Have the mailer confirm.
The First-Class letter weight limit is 3.5 ounces. USPS: letter weight Weigh the finished envelope with the insert in it.
USPS also says square or rigid First-Class letter pieces pay a nonmachinable surcharge. USPS: nonmachinable pieces Ask the mailer to check the finished piece, not the brochure alone.
Find the customers outside the billing run
We suggest three questions. Who gets paper bills? Whose bill goes somewhere other than the propane property? Who gets no bill in this batch? Have the person who runs your warning procedure decide how each gap is handled.
Keep approval of the safety piece apart from billing's sign-off on balances. Name one person to confirm the right insert goes in the right batch.
Will Propane Safety Pro handle our monthly billing inserts?
The published service page does not describe billing inserts. Ask before you plan around it. Describe the bill and brochure, how many people receive it, and who does what. Ask for a quote on the work the team actually agrees to do.
General information, not legal advice. Talk to your own attorney or insurer about whether a billing insert fits your warning plan.
Get a Duty to Warn quote and describe the billing insert you want reviewed.
About Bill Stomp
Bill Stomp built Propane Safety Pro. He is a war veteran who ran over 87 propane branch offices across 12 states, and he has helped more than 200 propane companies improve their profits, sales, safety and operations.