2026-10-31 · Marketing

What Do CAN-SPAM and Florida Law Require for Small Business Email?

Every commercial email needs accurate sender details, an honest subject line, an ad label, your postal address, and a working opt-out. You must honor opt-outs within 10 business days. The federal law covers business-to-business email too. Florida separately bars false or misleading subject lines in unsolicited commercial email.

What is CAN-SPAM?

CAN-SPAM is the federal law for commercial email. The FTC says it covers all commercial messages, not just bulk mail, and makes no exception for business-to-business email. "Commercial" means the primary purpose is to advertise or promote a product or service.

What are the FTC's eight requirements?

# Requirement What to do
1 No false header information "From" and reply details must be accurate
2 No deceptive subject lines The subject must match the content
3 Identify the message as an ad A clear, conspicuous label
4 Give your location A valid street address, registered P.O. box, or registered private mailbox
5 Explain how to opt out Clear, easy, and covering all marketing email
6 Members can opt out too Subscribers still have the right
7 Honor opt-outs promptly Within 10 business days, no fee
8 Watch your vendors You stay responsible

How do you apply this?

  1. Check every email's purpose. If it mainly promotes your services, treat it as commercial.
  2. Write honest subject lines. If you use AI to draft them, remove invented urgency.
  3. Add a footer. Example: "This is an advertisement from [Business], [street address], Melbourne, FL. To stop marketing emails, reply STOP or click unsubscribe."
  4. Keep the opt-out working for at least 30 days after sending.
  5. Process opt-outs within 10 business days. Do it sooner if you can.
  6. Never sell or transfer an address after someone opts out, except to a firm helping you comply.
  7. Check your email vendor's setup, since the law holds both sender and advertiser responsible.

What is a transactional message?

Messages that only confirm or complete a deal the customer agreed to, give warranty or safety information, or update an account are treated more leniently. The FTC says the law reads these categories narrowly. If promotional content comes first, the message is likely commercial.

What does Florida add?

Section 668.603 bars unsolicited commercial email that uses a third party's domain without permission, falsifies routing information, or contains false or misleading subject-line information.

What are the penalties?

The FTC guide says each separate violating email can bring penalties of up to $53,088. That figure comes from the FTC's January 2025 inflation adjustment, and the FTC said it would keep 2025 penalty levels in 2026. Check the guide for later adjustments.

What this won't do

This post does not cover texting, cold calling, or privacy law. It is not legal advice, and it does not improve deliverability.

FAQ

Does CAN-SPAM apply to B2B email?

Yes. The FTC says the law makes no exception for business-to-business email.

Do I need consent to send marketing email?

The FTC's requirements center on an opt-out, not prior consent. Other laws and email platform rules may require more.

Can I use a P.O. box as my address?

Yes, if it is registered with the U.S. Postal Service, or a private mailbox registered with a commercial mail receiving agency.

How long do I have to honor an unsubscribe?

Ten business days.

Your next step

Fruxd LLC, an AI studio in Melbourne, FL, can check your public email sign-up path in a free AI Opportunity Snapshot. Request your free AI Opportunity Snapshot.

Sources

Checked 2026-10-31.

Written by Fruxd.